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Pinnularia C.G. Ehrenberg, 1843

149208  (urn:lsid:marinespecies.org:taxname:149208)

accepted
Genus
Species Pinnularia acrosphaeria W.Smith, 1853
  » Forma Pinnularia acrosphaeria f. acrosphaeria (Brébisson) W. Smith, 1853 represented as Frustulia acrosphaeria Brébisson, 1838
  » Forma Pinnularia acrosphaeria f. laevis (M. Peragallo & Heribaud in Heribaud) Cleve, 1895 represented as Navicula acrosphaeria var. laevis M.Peragallo & Héribaud-Joseph, 1893
  » Forma Pinnularia acrosphaeria f. undulata (Cleve) Hustedt, 1930 represented as Pinnularia acrosphaeria var. undulata Cleve, 1895
  » Variety Pinnularia acrosphaeria var. americana (Tempère & Peragallo) Frenguelli, 1933 represented as Navicula acrosphaeria var. americana Tempère & Peragallo, 1913
  » Variety Pinnularia acrosphaeria var. bacillaris (Heribaud) F.W. Mills, 1934 represented as Navicula acrosphaeria var. bacillaris Héribaud, 1903
  » Variety Pinnularia acrosphaeria var. badeana (Heribaud & M. Peragallo in Heribaud) F.W. Mills, 1934 represented as Navicula acrosphaeria var. badeana Héribaud & M. Peragallo in Héribaud, 1902
  » Variety Pinnularia acrosphaeria var. dilatata (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 represented as Navicula acrosphaeria var. dilatata M. Peragallo in Tempère & Peragallo, 1908
  » Variety Pinnularia acrosphaeria var. elongata (Heribaud) F.W. Mills, 1934 represented as Navicula acrosphaeria var. elongata Héribaud, 1903
  » Forma Pinnularia acrosphaeria f. genuina Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. hankensis (Skvortzow) (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. interrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. maxima Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. minor Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. minor Skvortzow, 1936 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. minor Otto Müller, 1910 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. minor Frenguelli, 1933 (uncertain, unassessed)
  » Forma Pinnularia acrosphaeria f. turgidula Grunow ex Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. asiatica Hirano, 1967 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. controversa Cholnoky, 1958 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. dilata (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. dubia Guermeur, 1954 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. ecuatoriana De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. genuina (Cleve) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. hyalina Kobayasi in Kobayasi & Ando, 1977 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. inflata Amossé, 1969 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. linearis Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. mayeri Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. minor Tarnavischi & Jitariu, 1955 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. minor (Cleve) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. minor Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. parva K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. sandvicensis A.Schmidt, 1875 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. tumidula K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia acrosphaeria var. undulata Cleve, 1895 (uncertain, unassessed)
Species Pinnularia acuminata W.Smith, 1853
  » Forma Pinnularia acuminata f. interrupta (Cleve) Cleve-Euler, 1955 represented as Pinnularia hemiptera var. interrupta Cleve, 1895
  » Variety Pinnularia acuminata var. bielawskii (Héribaud & M.Peragallo) R.M.Patrick, 1966 represented as Navicula hemiptera var. bielawskii Héribaud & M.Peragallo, 1893
  » Variety Pinnularia acuminata var. interrupta (Cleve) Cleve-Euler, 1948 represented as Pinnularia hemiptera var. interrupta Cleve, 1895
  » Variety Pinnularia acuminata var. interrupta (Cleve) R.M.Patrick, 1966 represented as Pinnularia hemiptera var. interrupta Cleve, 1895
  » Forma Pinnularia acuminata f. acuta Carter & Denny, 1987 (uncertain, unassessed)
  » Forma Pinnularia acuminata f. cuyabenensis De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
  » Forma Pinnularia acuminata f. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia acuminata f. semiinterrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. acuminata W. Smith, 1853 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. carteri K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. constricta Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. cuyabenensis De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. guyanensis D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. naviculoides Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia acuminata var. novaezealandica K.Krammer, 2000 † (uncertain, unassessed)
  » Variety Pinnularia acuminata var. steinitzii De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
Species Pinnularia aestuari
  » Variety Pinnularia aestuari var. hinganica Skvortzov, 1976 (uncertain, unassessed)
Species Pinnularia aestuarii Cleve, 1895
  » Variety Pinnularia aestuarii var. lata Gandhi, 1957
  » Forma Pinnularia aestuarii f. elliptica (Meister) Cleve-Euler, 1955 represented as Pinnularia viridis f. elliptica Meister, 1912
  » Forma Pinnularia aestuarii f. interrupta (Hustedt) Cleve-Euler, 1955 represented as Pinnularia viridis var. interrupta Hustedt, 1914
  » Variety Pinnularia aestuarii var. magocsyi (Pantocsek) Cleve-Euler, 1955 represented as Navicula magocsyi var. magocsyi Pantocsek, 1902
  » Variety Pinnularia aestuarii var. minor (Cleve) Cleve-Euler, 1955 † represented as Pinnularia viridis var. minor Cleve, 1891 †
  » Variety Pinnularia aestuarii var. rupestris Skvortzow, 1938 represented as Pinnularia montium Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018 (homotypic synonym)
  » Forma Pinnularia aestuarii f. aestuarii Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia aestuarii f. borealis Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia aestuarii f. lapponica Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Pinnularia aestuarii f. semicontinua (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia aestuarii var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia aestuarii var. lapponica (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia aljustrelica A.Luís, S.F.P.Almeida & L.Ector, 2012
Species Pinnularia alpina W.Smith, 1853
  » Variety Pinnularia alpina var. elongata (M.Peragallo) F.W.Mills, 1934 represented as Navicula alpina var. elongata M.Peragallo, 1908
  » Variety Pinnularia alpina var. kerguelensis (Heiden & Kolbe) Frenguelli, 1942 represented as Pinnularia kerguelensis H.Heiden
  » Forma Pinnularia alpina f. symmetrica Mereschkowsky, 1906 (uncertain, unassessed)
  » Variety Pinnularia alpina var. alpina Mereschkowsky, 1906 (uncertain, unassessed)
  » Variety Pinnularia alpina var. alpina W. Smith, 1853 (uncertain, unassessed)
  » Variety Pinnularia alpina var. diminuta Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia alpina var. dornensis Tarnavischi & Jitariu, 1955 (uncertain, unassessed)
  » Variety Pinnularia alpina var. genuina Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia alpina var. linearis Østrup, 1918 (uncertain, unassessed)
  » Variety Pinnularia alpina var. parallela Zanon, 1938 (uncertain, unassessed)
Species Pinnularia amsterdamensis B.Chattová, D.Metzeltin & B.Van de Vijver, 2012
Species Pinnularia andama M.S.Kulikovskiy, D.Metzeltin & H.Lange-Bertalot, 2012
Species Pinnularia angulata A.Cleve, 1955
  » Variety Pinnularia angulata var. angulata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia angulata var. densestriata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia angulata var. typica Cleve-Euler, 195- (uncertain, unassessed)
Species Pinnularia angustarea M.S.Kulikovskiy, Lange-Bert., Witkowski & N.I.Dorofeyuk, 2010
Species Pinnularia aperta (Frenguelli) F.W. Mills, 1934
Species Pinnularia aquaedulcis Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018
Species Pinnularia arkadii Neplyukhina, Chudaev & Gololobova, 2018
Species Pinnularia asiatica (Skvortzow) Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia australoborealis B. van de Vijver & R. Zidarova, 2011
Species Pinnularia australodivergens R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia australogibba B. Van de Vijver, B. Chattová & D. Metzeltin, 2012
Species Pinnularia australoglobiceps R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia australomicrostauron R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia australoschoenfelderi R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia austroshetlandica (Carlson) A.Cleve
Species Pinnularia baetica Fernández Moreno & Sánchez Castillo
Species Pinnularia beringensis M.Potapova, 2014
Species Pinnularia bertrandii K.Krammer, 2000
  » Variety Pinnularia bertrandii var. angustefasciata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia bertrandii var. orleansiana K.Krammer, 2000 (uncertain, unassessed)
Species Pinnularia beyensii (Lange-Bertalot & Krammer) Y.Liu, Kociolek & Q.Wang in Y. Liu et al., 2018
Species Pinnularia bicapitata (Lagerstedt) Cleve, 1891
  » Variety Pinnularia bicapitata var. bicapitata (Lagerstedt) Cleve, 1891 represented as Navicula bicapitata f. bicapitata Lagerstedt, 1873
  » Variety Pinnularia bicapitata var. interrupta (W.Smith) L.Dippel, 1905 represented as Pinnularia interrupta f. interrupta W. Smith, 1853
  » Variety Pinnularia bicapitata var. decrescens Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia bicapitata var. hybrida (Grunow in Van Heurck) Hofmann, 1914 (uncertain, unassessed)
  » Variety Pinnularia bicapitata var. inaequalis Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Pinnularia bicapitata var. lata Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia bicapitata var. minor (Otto Müller) Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia bicapitata var. sulcata Héribaud, 1903 (uncertain, unassessed)
Species Pinnularia biceps W.Gregory, 1856
  » Forma Pinnularia biceps f. minor (J.B.Petersen) Cleve-Euler, 1951 represented as Pinnularia interrupta f. minor J.B.Petersen, 1928
  » Forma Pinnularia biceps f. minutissima (Hustedt) Cleve-Euler, 1955 represented as Pinnularia interrupta var. minutissima F.Hustedt, 1924
  » Variety Pinnularia biceps var. amphicephala (A.Mayer) Cleve-Euler, 1955 represented as Pinnularia amphicephala A.Mayer, 1917
  » Variety Pinnularia biceps var. gibberula (Hustedt) K.Krammer, 2000 represented as Pinnularia interrupta var. gibberula Hustedt, 1950
  » Variety Pinnularia biceps var. joculata (Manguin) Woodhead & Tweed, 1958 represented as Pinnularia interrupta var. joculata Manguin, 1952
  » Variety Pinnularia biceps var. lata (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia bicapitata var. lata Cleve-Euler, 1932
  » Forma Pinnularia biceps f. biceps (Cleve) Ross, 1947 (uncertain, unassessed)
  » Forma Pinnularia biceps f. biceps Gregory, 1856 (uncertain, unassessed)
  » Forma Pinnularia biceps f. gregorii Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biceps f. inaequalis Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biceps f. mesolepta (Guermeur) Woodhead & Tweed, 1958 (uncertain, unassessed)
  » Forma Pinnularia biceps f. nodulosa Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biceps f. petersenii R.Ross, 1947 (uncertain, unassessed)
  » Forma Pinnularia biceps f. stauroneiformis (Cleve) Ross, 1947 (uncertain, unassessed)
  » Forma Pinnularia biceps f. subundulata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biceps f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia biceps var. constricta (Manguin) Woodhead & Tweed, 1958 (uncertain, unassessed)
  » Variety Pinnularia biceps var. minor (Petersen) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia biceps var. pusilla K.E. Camburn & D.F. Charles, 2000 (uncertain, unassessed)
  » Variety Pinnularia biceps var. stauroneiformis Cleve ex A. Cleve, 1895 (uncertain, unassessed)
Species Pinnularia biglobosa (Schumann) Mills
  » Forma Pinnularia biglobosa f. continua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biglobosa f. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biglobosa f. interrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia biglobosa f. semiinterrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia biglobosa var. biglobosa (Schumann) (uncertain, unassessed)
  » Variety Pinnularia biglobosa var. minuta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia biglobosa var. opulenta Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia bilobata A.Cleve, 1955
  » Variety Pinnularia bilobata var. angustecruciata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bilobata var. bilobata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bilobata var. intermedia Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bilobata var. typica Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia bipectinalis (Schumann) Greguss, 1913
  » Variety Pinnularia bipectinalis var. bipectinalis (Schumann) Greguss, 1913 represented as Navicula bipectinalis Schumann, 1867
  » Forma Pinnularia bipectinalis f. inflata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Forma Pinnularia bipectinalis f. staurophora Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Forma Pinnularia bipectinalis f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia bipectinalis f. undulata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bipectinalis var. bipectinalis Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bipectinalis var. densestriata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bipectinalis var. lata Foged, 1973 (uncertain, unassessed)
Species Pinnularia boecheri Foged, 1953
  » Forma Pinnularia boecheri f. boecheri Foged, 1953 (uncertain, unassessed)
  » Forma Pinnularia boecheri f. ovata Foged, 1964 (uncertain, unassessed)
Species Pinnularia bogotensis (Grunow) Cleve, 1895
  » Variety Pinnularia bogotensis var. bogotensis (Grunow in Schmidt et al.) Cleve, 1895 represented as Navicula bogotensis var. bogotensis Grunow in Schmidt et al., 1876
  » Variety Pinnularia bogotensis var. interrupta (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 represented as Navicula bogotensis var. interrupta M. Peragallo in Tempère
  » Variety Pinnularia bogotensis var. okamurae (Skvortzow) Skvortzow & Noda, 1971 represented as Pinnularia okamurae Skvortzow, 1936
  » Variety Pinnularia bogotensis var. undulata (M.Peragallo) Boyer, 1927 represented as Navicula bogotensis var. undulata M.Peragallo, 1908
  » Variety Pinnularia bogotensis var. uninterrupta (M. Peragallo in Tempere & Peragallo; Terry) Boyer, 1927 represented as Navicula bogotensis var. undulata M.Peragallo, 1908
  » Forma Pinnularia bogotensis f. continua Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Pinnularia bogotensis f. ventricosa Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. andina Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. asiatica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. densistriata Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. koreana Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia bogotensis var. patagonia Frenguelli, 1942 (uncertain, unassessed)
Species Pinnularia boliviana S.Blanco, I.Alvarez-Blanco & C.Cejudo-Figueiras, 2012
Species Pinnularia borealis Ehrenberg, 1843
  » Variety Pinnularia borealis var. barodensis H.P.Gandhi ex Karthick, 2020
  » Variety Pinnularia borealis var. lonavlensis Gandhi, 1962
  » Variety Pinnularia borealis var. pseudolanceolata B. van de Vijver & R. Zidarova, 2011
  » Forma Pinnularia borealis f. linearis (Heribaud) Østrup, 1918 represented as Navicula borealis var. linearis Héribaud, 1908
  » Forma Pinnularia borealis f. scalaris (Ehrenberg) Rabenhorst, 1864 represented as Stauroptera scalaris Ehrenberg, 1843
  » Variety Pinnularia borealis var. caraccana (Ehrenberg) Brun, 1880 represented as Pinnularia caraccana Ehrenberg ex Rabenhorst, 1853
  » Variety Pinnularia borealis var. constricta (Zanon) Cholnoky, 1960 represented as Pinnularia lata var. constricta Zanon, 1938
  » Variety Pinnularia borealis var. major (M. Peragallo & Heribaud in Heribaud) F.W. Mills, 1934 represented as Navicula borealis var. major M. Peragallo & Héribaud in Héribaud, 1893
  » Variety Pinnularia borealis var. barodensis H.P. Gandhi, 1998 accepted as Pinnularia borealis var. barodensis H.P.Gandhi ex Karthick, 2020 (Invalid - type not designated)
  » Forma Pinnularia borealis f. angusta Cholnoky, 1952 (uncertain, unassessed)
  » Forma Pinnularia borealis f. bergii Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. borealis Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Pinnularia borealis f. brevicostata Hustedt, 1914 (uncertain, unassessed)
  » Forma Pinnularia borealis f. conica Cholnoky, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. continua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. elongata Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia borealis f. evidentius (uncertain, unassessed)
  » Forma Pinnularia borealis f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia borealis f. intermedia Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. intermedia Mayer, 1925 (uncertain, unassessed)
  » Forma Pinnularia borealis f. lanceolata Boye Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia borealis f. longiora Rabenhorst, 1864 (uncertain, unassessed)
  » Forma Pinnularia borealis f. mayeri Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. medioinflata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Forma Pinnularia borealis f. minuta Cholnoky, 1954 (uncertain, unassessed)
  » Forma Pinnularia borealis f. ovalis Boye Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia borealis f. rectangularis Carlson, 1913 (uncertain, unassessed)
  » Forma Pinnularia borealis f. rectangulata Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Forma Pinnularia borealis f. repanda Tsumura, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. rostrata Manguin, 1964 (uncertain, unassessed)
  » Forma Pinnularia borealis f. rotundata Mayer, 1925 (uncertain, unassessed)
  » Forma Pinnularia borealis f. schmidtii Boye Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia borealis f. semseyana Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Forma Pinnularia borealis f. stauroneiformis Otto Müller, 1910 (uncertain, unassessed)
  » Forma Pinnularia borealis f. subcapitata Boye Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia borealis f. subundulata Topachevskii, 1941 (uncertain, unassessed)
  » Forma Pinnularia borealis f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia borealis f. typica Petersen, 1928 (uncertain, unassessed)
  » Variety Pinnularia borealis var. acuta Ehrenberg, 1854 (uncertain, unassessed)
  » Variety Pinnularia borealis var. africana Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia borealis var. australis Manguin in Bourrelly & Manguin, 1954 (uncertain, unassessed)
  » Variety Pinnularia borealis var. beta Ehrenberg, 1874 (uncertain, unassessed)
  » Variety Pinnularia borealis var. congolensis Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia borealis var. cuneorostrata Manguin in Bourrelly & Manguin, 1954 (uncertain, unassessed)
  » Variety Pinnularia borealis var. decurrens Ehrenberg, 1860 (uncertain, unassessed)
  » Variety Pinnularia borealis var. densestriata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia borealis var. elegans Hustedt, 1934 (uncertain, unassessed)
  » Variety Pinnularia borealis var. elliptica Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia borealis var. islandica Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia borealis var. lanceolata Hustedt, 1934 (uncertain, unassessed)
  » Variety Pinnularia borealis var. minor Shirshov, 1935 (uncertain, unassessed)
  » Variety Pinnularia borealis var. mundivaga Ehrenberg (uncertain, unassessed)
  » Variety Pinnularia borealis var. rhodesica Cholnoky, 1954 (uncertain, unassessed)
  » Variety Pinnularia borealis var. rupestris Skvortzow, 1938 accepted as Pinnularia parallela Skvortzov, 2012 (uncertain, unassessed)
  » Variety Pinnularia borealis var. scalaris sensu Mayer, 1925 (uncertain, unassessed)
  » Variety Pinnularia borealis var. subacuta Ehrenberg (uncertain, unassessed)
  » Variety Pinnularia borealis var. subislandica Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia borealis var. sublinearis Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia borealis var. tenuis Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia borealis var. tenuistriata Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia borealis var. thuringiaca K. Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia borealis var. undata Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
  » Variety Pinnularia borealis var. undulata Hustedt, 1934 (uncertain, unassessed)
Species Pinnularia brandelii Cleve, 1891
  » Variety Pinnularia brandelii var. brandelii Cleve, 1891 (uncertain, unassessed)
  » Variety Pinnularia brandelii var. clevei Cleve-Euler, 1955 † (uncertain, unassessed)
  » Variety Pinnularia brandelii var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia brandelii var. linearis Østrup, 1918 † (uncertain, unassessed)
  » Variety Pinnularia brandelii var. recta Hustedt, 1942 † (uncertain, unassessed)
Species Pinnularia brasiliensis Hustedt
Species Pinnularia brebissoni
Species Pinnularia brevicostata Cleve, 1891
  » Variety Pinnularia brevicostata var. indica Gandhi, 1960
  » Forma Pinnularia brevicostata f. brevicostata Cleve, 1891 (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. cuneata Rivera, 1974 (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. inflata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. leptostauron Cleve, 1891 (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. semicruciata Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. subinflata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia brevicostata f. ventricosa Hustedt, 1942 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. crucifera Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. cuneata Manguin, 1952 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. demerarae Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. elongata Cleve-Euler, 1933 † (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. intermedia Manguin, 1942 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. islandica Østrup, 1918 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. leptostauron sensu Mayer, 1940 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. misionera Frenguelli, 1953 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. plana Brun, 1901 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. subcapitata Cleve-Euler, 1915 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. sumatrana Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. tenuis A. Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. thaiensis Foged, 1972 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. triangulata (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia brevicostata var. undulata Frenguelli, 1953 (uncertain, unassessed)
Species Pinnularia caloneiformis Hustedt, 1934
Species Pinnularia cambodiana Cejudo-Figueiras, S. Blanco & Álvarez-Blanco, 2010
Species Pinnularia caprichosa A.C. Pereira & Torgan, 2015
Species Pinnularia catenaborealis Pinseel, Hejdukova, Vanormelingen, Kopalova, Vyverman & Van de Vijver, 2017
Species Pinnularia clavata Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia claviculus (Gregory) Rabenhorst, 1864
Species Pinnularia clericii (J.Frenguelli) J.Frenguelli, 1933
Species Pinnularia clevei R.M.Patrick, 1945
Species Pinnularia conica Gandhi, 1957
Species Pinnularia crater-lapis Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia crucifera Cleve-Euler, 1934 †
  » Forma Pinnularia crucifera f. tenuis (A. Cleve) Cleve-Euler, 1955 represented as Pinnularia brevicostata var. tenuis A. Cleve, 1895
  » Variety Pinnularia crucifera var. elongata (Cleve-Euler) Cleve-Euler, 1955 † represented as Pinnularia brevicostata var. elongata Cleve-Euler, 1933 †
  » Variety Pinnularia crucifera var. subcapitata (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia brevicostata var. subcapitata Cleve-Euler, 1915
  » Forma Pinnularia crucifera f. ventricosa Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia crucifera var. crucifera Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia crucifera var. subrostrata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia crucifera var. undulata Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia cruciformis (Donkin) Cleve, 1895
  » Variety Pinnularia cruciformis var. brevior (Cleve) Cleve, 1895 represented as Navicula cruciformis var. brevior Cleve, 1883
  » Variety Pinnularia cruciformis var. cruciformis (Donkin) Cleve, 1895 represented as Navicula cruciformis var. cruciformis Donkin, 1861
  » Variety Pinnularia cruciformis var. seychellensis (Grunow) Cleve represented as Navicula cruciformis var. seychellensis Cleve & Grunow, 1880
  » Forma Pinnularia cruciformis f. capitata Foged, 1974 (uncertain, unassessed)
  » Variety Pinnularia cruciformis var. densior Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia cruciformis var. faeronensis Østrup, 1901 (uncertain, unassessed)
  » Variety Pinnularia cruciformis var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia cruciformis var. upolensis (Grunow) Cleve (uncertain, unassessed)
Species Pinnularia cuneata (Østrup) Cleve-Euler, 1915
  » Forma Pinnularia cuneata f. cuneata (Østrup) Cleve-Euler, 1915 represented as Pinnularia flexuosa var. cuneata Østrup, 1910
  » Variety Pinnularia cuneata var. magocsyi (Pantocsek) Cleve-Euler, 1932 represented as Navicula magocsyi var. magocsyi Pantocsek, 1902
  » Forma Pinnularia cuneata f. aequalis Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia cuneata f. constricta Cleve-Euler, 1915 (uncertain, unassessed)
  » Forma Pinnularia cuneata f. schumannii Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia cuneata f. semicruciata Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia cuneata f. semiinterrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia cuneata f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia cuneata var. intermedia Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia cuneata var. interrupta Wislouch & Poretsky in Poretsky, 1924 (uncertain, unassessed)
  » Variety Pinnularia cuneata var. reducta A.Cleve, 1932 (uncertain, unassessed)
Species Pinnularia dactylus Ehrenberg, 1843
  » Forma Pinnularia dactylus f. dariana (Schmidt in Schmidt et al.) Cleve, 1895 represented as Navicula dariana f. dariana Schmidt in Schmidt et al., 1876
  » Variety Pinnularia dactylus var. argentina Frenguelli, 1951 represented as Navicula dactylus var. argentina Frenguelli, 1923
  » Variety Pinnularia dactylus var. horrida (M. Peragallo & Héribaud in Héribaud) Cleve, 1895 represented as Navicula major var. horrida M.Peragallo & Héribaud-Joseph
  » Variety Pinnularia dactylus var. lata (Frenguelli) F.W. Mills, 1934 represented as Navicula dactylus var. lata Frenguelli, 1923
  » Forma Pinnularia dactylus f. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Forma Pinnularia dactylus f. dactylus Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Pinnularia dactylus f. medioconstricta Fontell, 1917 (uncertain, unassessed)
  » Forma Pinnularia dactylus f. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. convergentissima Skvortzov, 2012 (uncertain)
  » Variety Pinnularia dactylus var. demerarae Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. densestriata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia dactylus var. distincta Jurilj, 1957 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. gigas (Ehrenberg) Frenguelli, 1933 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. gigas Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. gracilis (Heribaud) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. hyalina Iyengar & Subrahmanyan, 1943 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. medioconstricta Fontell, 1917 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. mingiana Skvortzov, 2012 (uncertain)
  » Variety Pinnularia dactylus var. miocenica (Heribaud & M. Peragallo in Heribaud) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. orbigera Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia dactylus var. peruviana Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. semitropica Skvortzov, 2012 (uncertain)
  » Variety Pinnularia dactylus var. subundulata Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Pinnularia dactylus var. sumatrana Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
Species Pinnularia daerbinsis Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia decurrens Ehrenberg, 1843
Species Pinnularia demersa Kociolek in Kociolek et al., 2014
Species Pinnularia dicephala Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia dicephala (Ehrenberg) Ehrenberg
Species Pinnularia distans Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia distinguenda (Cleve) Cleve, 1895 †
Species Pinnularia divergens W.Smith, 1853
  » Forma Pinnularia divergens f. elliptica (Grunow) Cleve, 1895 represented as Navicula divergens f. elliptica Grunow, 1884
  » Variety Pinnularia divergens var. bacillaris (M.Peragallo) Mills, 1934 represented as Navicula divergens var. bacillaris M.Peragallo, 1908
  » Variety Pinnularia divergens var. biconstricta (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia divergens f. biconstricta Cleve-Euler, 1939
  » Variety Pinnularia divergens var. constricta (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 represented as Navicula divergens var. constricta M. Peragallo in Tempère & Peragallo, 1908
  » Variety Pinnularia divergens var. decrescens (Grunow) K.Krammer, 1992 represented as Navicula legumen f. decrescens Grunow in Van Heurck, 1880
  » Variety Pinnularia divergens var. laticeps (Frenguelli) Frenguelli, 1933 represented as Navicula divergens var. laticeps Frenguelli, 1926
  » Variety Pinnularia divergens var. parallela (Brun) Frenguelli, 1933 † represented as Pinnularia parallela var. parallela Brun, 1895
  » Variety Pinnularia divergens var. prolongata (Brun & M. Peragallo in Heribaud) F.W. Mills, 1934 represented as Navicula divergens var. prolongata Brun & M. Peragallo in Héribaud, 1893
  » Variety Pinnularia divergens var. schweinfurthii (A.Schmidt) Cleve, 1895 represented as Navicula schweinfurthi A.W.F.Schmidt, 1876
  » Variety Pinnularia divergens var. undulata (M.Peragallo & Héribaud-Joseph) Hustedt, 1914 represented as Navicula divergens var. undulata M.Peragallo & Héribaud-Joseph, 1893
  » Forma Pinnularia divergens f. baicalica Reinhardt in Meyer & Reinhardt, 1925 (uncertain, unassessed)
  » Forma Pinnularia divergens f. biconstricta Cleve-Euler, 1939 (uncertain, unassessed)
  » Forma Pinnularia divergens f. ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Forma Pinnularia divergens f. divergens W. Smith, 1853 (uncertain, unassessed)
  » Forma Pinnularia divergens f. genuina Meister, 1912 (uncertain, unassessed)
  » Forma Pinnularia divergens f. linearis Fontell, 1917 (uncertain, unassessed)
  » Forma Pinnularia divergens f. linearis Manguin, 1962 (uncertain, unassessed)
  » Forma Pinnularia divergens f. linearis Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Forma Pinnularia divergens f. linearis Østrup, 1910 (uncertain, unassessed)
  » Forma Pinnularia divergens f. major Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia divergens f. major Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia divergens f. major Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia divergens f. malayensis Hustedt, 1942 (uncertain, unassessed)
  » Forma Pinnularia divergens f. minor Hustedt, 1921 (uncertain, unassessed)
  » Forma Pinnularia divergens f. minor Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia divergens f. minor Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia divergens f. minor Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia divergens f. ornata Grunow in Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia divergens f. parallela Brun, 1895 (uncertain, unassessed)
  » Forma Pinnularia divergens f. stomatophora Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia divergens f. subundulata (uncertain, unassessed)
  » Forma Pinnularia divergens f. typica Berg, 1945 (uncertain, unassessed)
  » Variety Pinnularia divergens var. alaskaensis Foged, 1981 (uncertain, unassessed)
  » Variety Pinnularia divergens var. americana Meister, 1937 (uncertain, unassessed)
  » Variety Pinnularia divergens var. attenuato-constricta Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia divergens var. capitata F. W. Mills, 1932 (uncertain, unassessed)
  » Variety Pinnularia divergens var. capitata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia divergens var. continua Mereschkowsky, 1906 (uncertain, unassessed)
  » Variety Pinnularia divergens var. cuneata Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia divergens var. elongata Østrup, 1910 (uncertain, unassessed)
  » Variety Pinnularia divergens var. fontellii Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia divergens var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia divergens var. ignorata K.Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia divergens var. japonica Meister, 1914 (uncertain, unassessed)
  » Variety Pinnularia divergens var. lanceolata Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia divergens var. laticeps Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia divergens var. madagascariensis D. Metzeltin in D. Metzeltin & H. Lange-Bertalot, 2002 (uncertain, unassessed)
  » Variety Pinnularia divergens var. media Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergens var. mesoleptiformis Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
  » Variety Pinnularia divergens var. minor Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia divergens var. perundulata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergens var. protracta Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
  » Variety Pinnularia divergens var. rhombundulata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergens var. rostrata Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
  » Variety Pinnularia divergens var. rugosa F. W. Mills, 1932 (uncertain, unassessed)
  » Variety Pinnularia divergens var. subbacillaris K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergens var. subcapitata Frenguelli, 1942 (uncertain, unassessed)
  » Variety Pinnularia divergens var. subcuneata Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
  » Variety Pinnularia divergens var. sublineariformis K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergens var. sublinearis Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia divergens var. sublinearis Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia divergens var. subundulata Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia divergens var. truncata Cleve-Euler, 1915 (uncertain, unassessed)
  » Variety Pinnularia divergens var. tumida Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia divergens var. warriensis F. W. Mills, 1932 (uncertain, unassessed)
Species Pinnularia divergentissima (Grunow) Cleve, 1895
  » Forma Pinnularia divergentissima f. divergentissima (Grunow in Van Heurck) Cleve, 1895 represented as Navicula divergentissima var. divergentissima Grunow in Cleve & Möller, 1879
  » Forma Pinnularia divergentissima f. curta Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia divergentissima f. elongata Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Pinnularia divergentissima f. nodulosa Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia divergentissima f. robusta Fusey, 1964 (uncertain, unassessed)
  » Forma Pinnularia divergentissima f. subacuta McCall, 1933 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. ardnamurchan K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. capitata Fontell, 1917 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. capitata Hustedt, 1921 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. hustedtiana R.Ross, 1947 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. inflata Fusey, 1964 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. lata Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. martinii (K.Krasske) K.Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. minor Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. subacuta McCall, 1933 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. subrostrata A.Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. triundulata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. typica Ross, 1947 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. undulata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia divergentissima var. wulffii J.B.Petersen, 1924 (uncertain, unassessed)
Species Pinnularia divergentissimoides Gandhi, 1970
Species Pinnularia doeringii (Frenguelli) Mills, 1934
Species Pinnularia dolosa H.P.Gandhi
  » Variety Pinnularia dolosa var. chariessa Gandhi, 1960
  » Variety Pinnularia dolosa var. dolosa Gandhi, 1960 (uncertain, unassessed)
Species Pinnularia domestica E.Reichardt, 2012
Species Pinnularia domingensis (Cleve) Hustedt, 1934
Species Pinnularia dorofeyukiae M.S.Kulikovskiy, Lange-Bert. & Witkowski, 2010
Species Pinnularia dorogostaiskii Skvortzov
  » Variety Pinnularia dorogostaiskii var. latior Skvortzov, 1976 (uncertain, unassessed)
Species Pinnularia dubiosa Gandhi, 1966
Species Pinnularia eburnea V.Zanon
Species Pinnularia episcopalis Cleve, 1891
  » Forma Pinnularia episcopalis f. episcopalis Cleve, 1891 (uncertain, unassessed)
  » Forma Pinnularia episcopalis f. neogena Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. africana Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. africana Cholnoky, 1957 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. brevis Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. elliptica Pierre, 1965 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. elongata Thomas & Gonzalves, 1965 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. lineata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. manschurica Skvortzow, 1928 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. mingiana Skvortzov, 2012 (uncertain)
  » Variety Pinnularia episcopalis var. perelliptica K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. robusta C.W.Fontell, 1917 (uncertain, unassessed)
  » Variety Pinnularia episcopalis var. subelliptica Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia esox Ehrenberg, 1843
  » Variety Pinnularia esox var. capitata Gandhi, 1957
  » Variety Pinnularia esox var. fasciata Gandhi, 1957
  » Variety Pinnularia esox var. florentina (Grunow in Cleve & Möller) F.W. Mills, 1934 represented as Navicula esox var. florentina Grunow in Cleve & Möller, 1877
  » Variety Pinnularia esox var. recta (Heribaud) F.W. Mills, 1934 represented as Navicula esox var. recta Héribaud, 1903
  » Forma Pinnularia esox f. esox Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Pinnularia esox f. major Hustedt in Schmidt et al., 1914 (uncertain, unassessed)
  » Forma Pinnularia esox f. minor F.Hustedt, 1914 (uncertain, unassessed)
  » Variety Pinnularia esox var. biconstricta (A.Cleve) Cleve-Euler (uncertain, unassessed)
  » Variety Pinnularia esox var. ceylanica Skvortzow, 1967 (uncertain, unassessed)
  » Variety Pinnularia esox var. clevei Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia esox var. crylanica Skvortzow, 1967 (uncertain, unassessed)
  » Variety Pinnularia esox var. gracilenscens Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia esox var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia esox var. islandica Foged, 1974 (uncertain, unassessed)
  » Variety Pinnularia esox var. lata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia esox var. parallela Cleve-Euler, 1951 (uncertain, unassessed)
  » Variety Pinnularia esox var. sibirica Skvortzov, 2012 (uncertain)
  » Variety Pinnularia esox var. ventricosa Cleve-Euler, 1932 (uncertain, unassessed)
Species Pinnularia flexuosa Cleve, 1895 †
Species Pinnularia gentilis (Donkin) Cleve, 1891
  » Variety Pinnularia gentilis var. gentilis (Donkin) Cleve, 1891 represented as Navicula gentilis var. gentilis Donkin, 1872
  » Variety Pinnularia gentilis var. fossilis Skvortzow, 1937 (uncertain, unassessed)
  » Variety Pinnularia gentilis var. neogena Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia gentilis var. sibirica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia gentilis var. subacuta Skvortzow, 1938 (uncertain, unassessed)
Species Pinnularia gibba Ehrenberg, 1843
  » Forma Pinnularia gibba f. genuina (Mayer) F.W. Mills, 1934 represented as Pinnularia gibba f. genuina Mayer, 1913
  » Forma Pinnularia gibba f. interrupta (Cleve) Proschkina-Lavrenko, 1950 represented as Pinnularia mesogongyla var. interrupta Cleve, 1891
  » Forma Pinnularia gibba f. interrupta (Cleve) Sieminska, 1964 represented as Pinnularia mesogongyla var. interrupta Cleve, 1891
  » Forma Pinnularia gibba f. parva (Ehrenberg) Hustedt, 1930 represented as Stauroptera parva Ehrenberg, 1843
  » Forma Pinnularia gibba f. semicruciata (Mayer) F.W. Mills, 1934 represented as Pinnularia gibba var. semicruciata Mayer, 1916 (1917)
  » Variety Pinnularia gibba var. clevei (Meister) Woodhead & Tweed, 1960 represented as Pinnularia stauroptera f. clevei Meister, 1912
  » Variety Pinnularia gibba var. curtecostata (Heribaud) F.W. Mills, 1934 represented as Navicula decurrens var. curtecostata Héribaud, 1903
  » Variety Pinnularia gibba var. interrupta (W.Smith) N.Woodhead & R.D.Tweed, 1960 represented as Pinnularia interrupta f. interrupta W. Smith, 1853
  » Variety Pinnularia gibba var. parva (Grunow) Frenguelli, 1933 represented as Navicula stauroptera var. parva Grunow, 1860
  » Variety Pinnularia gibba var. peckii (Rabenhorst) Mayer, 1913 represented as Stauroptera peckii Rabenhorst, 1853
  » Variety Pinnularia gibba var. sancta (Grunow ex Cleve) Meister, 1932 represented as Pinnularia stauroptera f. sancta Grunow ex Cleve, 1895
  » Variety Pinnularia gibba var. tabellaria (Ehrenberg) Brun, 1880 represented as Pinnularia tabellaria var. tabellaria Ehrenberg, 1843
  » Forma Pinnularia gibba f. brevistriata (Van Heurck) (uncertain, unassessed)
  » Forma Pinnularia gibba f. constricta Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
  » Forma Pinnularia gibba f. constricta Skvortzov, 1938 (uncertain, unassessed)
  » Forma Pinnularia gibba f. cuneocapitata Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
  » Forma Pinnularia gibba f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia gibba f. gibba Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Pinnularia gibba f. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Forma Pinnularia gibba f. intermedia Komarenko, 1956 (uncertain, unassessed)
  » Forma Pinnularia gibba f. interrupta Davidova, 1960 (uncertain, unassessed)
  » Forma Pinnularia gibba f. mesogongyla (Ehrenberg) Hustedt, 1930 (uncertain, unassessed)
  » Forma Pinnularia gibba f. minor Rabenhorst, 1864 (uncertain, unassessed)
  » Forma Pinnularia gibba f. minutissima Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia gibba f. parva Guermeur, 1954 (uncertain, unassessed)
  » Forma Pinnularia gibba f. polymorpha Skvortzow, 1938 (uncertain, unassessed)
  » Forma Pinnularia gibba f. semicruciata Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia gibba f. semicruciata Mayer ex Hustedt, 1930 (uncertain, unassessed)
  » Forma Pinnularia gibba f. subundulata Mayer, 1930 (uncertain, unassessed)
  » Forma Pinnularia gibba f. undulata Venkataraman, 1939 (uncertain, unassessed)
  » Forma Pinnularia gibba f. unipunctata Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Variety Pinnularia gibba var. acrosphaeria (L.A.Brébisson) J.-J.Brun, 1880 (uncertain, unassessed)
  » Variety Pinnularia gibba var. bahusiensis Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia gibba var. baikalensis Skvortzow, 1937 (uncertain, unassessed)
  » Variety Pinnularia gibba var. biwensis Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia gibba var. cuneata Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Variety Pinnularia gibba var. curta Bleisch, 1860 (uncertain, unassessed)
  » Variety Pinnularia gibba var. dissimilis Kobayasi, 1975 (uncertain, unassessed)
  » Variety Pinnularia gibba var. dokturowskii Skvortzov, 2012 (uncertain)
  » Variety Pinnularia gibba var. eburnea Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia gibba var. erectus Singh, 1962 (uncertain, unassessed)
  » Variety Pinnularia gibba var. hyalina Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia gibba var. intermedia (Cleve) Woodhead & Tweed, 1958 (uncertain, unassessed)
  » Variety Pinnularia gibba var. interrupta Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia gibba var. interrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia gibba var. lata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia gibba var. linearis Godward, 1937 (uncertain, unassessed)
  » Variety Pinnularia gibba var. linearis Hustedt, 1930 (uncertain, unassessed)
  » Variety Pinnularia gibba var. major Gutwinski, 1892 (uncertain, unassessed)
  » Variety Pinnularia gibba var. mingiana Skvortzov, 2012 (uncertain)
  » Variety Pinnularia gibba var. neglecta Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia gibba var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia gibba var. okamurae Skvortzow, 1937 (uncertain, unassessed)
  » Variety Pinnularia gibba var. rostrata R.M.Patrick, 1945 (uncertain, unassessed)
  » Variety Pinnularia gibba var. semicruciata Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia gibba var. sphagnicola Manguin & Dubois-Tylski, 1969 (uncertain, unassessed)
  » Variety Pinnularia gibba var. sublinearis Godward, 1937 (uncertain, unassessed)
  » Variety Pinnularia gibba var. subsancta Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia gibba var. subundulata (Ant.Mayer) J.Frenguelli, 1933 (uncertain, unassessed)
Species Pinnularia gibba (Ehrenberg) Ehrenberg, 1843
Species Pinnularia globiceps W.Gregory, 1856
  » Variety Pinnularia globiceps var. krockii (Grunow) Cleve, 1895
  » Variety Pinnularia globiceps var. krookii (Grunow) Cleve, 1895 accepted as Pinnularia globiceps var. krockii (Grunow) Cleve, 1895 (misspelling)
  » Forma Pinnularia globiceps f. minor Schulz, 1928 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. angustifasciata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. crassior Grunow, 1880 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. globiceps Gregory, 1856 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. gracilis (Lauby) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. linearis Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia globiceps var. typica Ross, 1947 (uncertain, unassessed)
Species Pinnularia gracile Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia gracillima W.Gregory, 1856
Species Pinnularia hamiltonii R.Zidaroza, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia hartleyana Greville, 1865
  » Subspecies Pinnularia hartleyana subsp. orientalis Metzeltin & Lange-Bertalot, 2003
  » Forma Pinnularia hartleyana f. linearis Hustedt, 1921 (uncertain, unassessed)
  » Forma Pinnularia hartleyana f. minor Skvortzow, 1946 (uncertain, unassessed)
  » Variety Pinnularia hartleyana var. amurensis Skvortzov, 2012 (uncertain)
  » Variety Pinnularia hartleyana var. attenuata F. W. Mills, 1932 (uncertain, unassessed)
  » Variety Pinnularia hartleyana var. curta Frenguelli, 1933 (uncertain, unassessed)
  » Variety Pinnularia hartleyana var. notata Kobayashi, 1968 (uncertain, unassessed)
  » Variety Pinnularia hartleyana var. orientalis D.Metzeltin & Lange-Bertalot, 2002 (uncertain, unassessed)
  » Variety Pinnularia hartleyana var. parva F. W. Mills, 1932 (uncertain, unassessed)
  » Variety Pinnularia hartleyana var. pulchella F. W. Mills, 1932 (uncertain, unassessed)
Species Pinnularia hybrida
Species Pinnularia idsbensis A.Pavlov & Z.Levkov, 2013
Species Pinnularia imperfecta A.Cleve, 1934
  » Forma Pinnularia imperfecta f. continua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia imperfecta f. imperfecta Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Pinnularia imperfecta f. typica Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia inconstans A.Mayer, 1916
  » Forma Pinnularia inconstans f. curta Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Pinnularia inconstans f. inconstans Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia inconstans var. constricta Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia inconstans var. genuina Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia inconstans var. semicontinua Mayer, 1916 (1917) (uncertain, unassessed)
Species Pinnularia inflata A.Cleve, 1955
  » Variety Pinnularia inflata var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia inflata var. inflata Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia inflata var. lulensis Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia inflata var. major Cleve-Euler, 1934 (uncertain, unassessed)
Species Pinnularia intermedia (Lagerstedt) Cleve, 1895
  » Forma Pinnularia intermedia f. intermedia (Lagerstedt) Cleve, 1895 represented as Navicula intermedia var. intermedia Lagerstedt, 1873
  » Variety Pinnularia intermedia var. antarctica (M. Peragallo) F.W. Mills, 1934 represented as Navicula intermedia var. antarctica M. Peragallo, 1921
  » Forma Pinnularia intermedia f. constricta Brun, 1901 (uncertain, unassessed)
  » Variety Pinnularia intermedia var. bryophila Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Variety Pinnularia intermedia var. elongata Fusey, 1964 (uncertain, unassessed)
  » Variety Pinnularia intermedia var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia intermedia var. hybrida (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia intermedia var. lanceolata Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia islandica Østrup, 1918
  » Forma Pinnularia islandica f. ikaensis Foged, 1973 (uncertain, unassessed)
  » Variety Pinnularia islandica var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia islandica var. islandica Østrup, 1918 (1920) (uncertain, unassessed)
  » Variety Pinnularia islandica var. lulensis Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia isostauron (Ehrenberg) Cleve, 1895
  » Forma Pinnularia isostauron f. continua (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia isostauron var. continua Cleve-Euler, 1934
  » Variety Pinnularia isostauron var. isostauron (Ehrenberg) Cleve, 1895 represented as Stauroptera isostauron Ehrenberg, 1843
  » Forma Pinnularia isostauron f. conifera (Brun & Heribaud in Heribaud) Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia isostauron f. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia isostauron f. semicruciata Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia isostauron f. subconstricta Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia isostauron f. subinflata Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia isostauron f. subinflata Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia isostauron f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia isostauron var. continua Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia isostauron var. dubia Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia isostauron var. koreana Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia isostauron var. orientalis Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia isostauron var. rectangularea Zanon, 1928 (uncertain, unassessed)
  » Variety Pinnularia isostauron var. rossica Skvortzov, 2012 (uncertain)
Species Pinnularia karnatica Gandhi, 1957
Species Pinnularia kolhapurensis Gandhi, 1958
Species Pinnularia krasskei Hustedt, 1934
  » Variety Pinnularia krasskei var. krasskei Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia krasskei var. ventricosa Hustedt, 1934 (uncertain, unassessed)
Species Pinnularia kurt-krammeri D.Metzeltin & H.Lange-Bertalot, 2014 †
Species Pinnularia lacustrigibba Poulíčková, D.G. Mann & Kollár, 2018
Species Pinnularia lagerheimii A.Cleve, 1895
  » Variety Pinnularia lagerheimii var. alandica Cleve-Euler, 1935 (uncertain, unassessed)
  » Variety Pinnularia lagerheimii var. lagerheimii A. Cleve, 1895 (uncertain, unassessed)
Species Pinnularia lagerstedtii (Cleve) Cleve-Euler, 1934
  » Variety Pinnularia lagerstedtii var. lagerstedtii (Cleve) Cleve-Euler, 1934 represented as Pinnularia parva f. lagerstedtii Cleve, 1895
  » Forma Pinnularia lagerstedtii f. continua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia lagerstedtii f. continua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia lagerstedtii f. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia lagerstedtii f. interrupta (Petersen) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia lagerstedtii f. interrupta (Petersen) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia lagerstedtii f. laticeps Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia lagerstedtii var. minuta Berg, 1945 (uncertain, unassessed)
Species Pinnularia lanceolata Heiden, 1928
  » Variety Pinnularia lanceolata var. interrupta (Cleve-Euler) Hirano, 1959 (uncertain, unassessed)
  » Variety Pinnularia lanceolata var. pulchella H.Heiden (uncertain, unassessed)
Species Pinnularia lata (Brébisson) W.Smith, 1853
  » Variety Pinnularia lata var. subcapitata Skvortzov, 2012
  » Forma Pinnularia lata f. curta (Grunow) Cleve, 1895 represented as Navicula lata var. curta Grunow, 1884
  » Forma Pinnularia lata f. lata (Brébisson) W. Smith, 1853 represented as Frustulia lata Brébisson, 1838
  » Forma Pinnularia lata f. thuringiaca (Rabenhorst) Mayer represented as Navicula thuringiaca var. thuringiaca Rabenhorst, 1848-1860
  » Variety Pinnularia lata var. costata (Ehrenberg) Meister, 1912 represented as Pinnularia costata Ehrenberg, 1843
  » Variety Pinnularia lata var. latestriata (Gregory) Cleve, 1895 represented as Pinnularia latistriata var. latistriata Gregory, 1854
  » Variety Pinnularia lata var. linearis (Gutwinski) Schonfeldt, 1913 represented as Navicula thuringiaca var. linearis Gutwinski, 1890
  » Variety Pinnularia lata var. megaloptera (Ehrenberg) Cleve-Euler, 1948 represented as Pinnularia megaloptera var. megaloptera Ehrenberg, 1854
  » Variety Pinnularia lata var. minor (Grunow) Cleve, 1895 represented as Navicula lata var. minor Grunow, 1878
  » Variety Pinnularia lata var. pachyptera (Ehrenberg) Meister, 1912 represented as Pinnularia pachyptera Ehrenberg, 1843
  » Variety Pinnularia lata var. rabenhorstii (Grunow) Cleve, 1895 represented as Navicula rabenhorstii var. rabenhorstii Grunow, 1860
  » Forma Pinnularia lata f. angustior Rabenhorst, 1864 (uncertain, unassessed)
  » Forma Pinnularia lata f. elliptica Mayer, 1925 (uncertain, unassessed)
  » Forma Pinnularia lata f. linearis Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia lata f. minuta Mayer, 1925 (uncertain, unassessed)
  » Forma Pinnularia lata f. serians Messikommer, 1956 (uncertain, unassessed)
  » Forma Pinnularia lata f. thuringiaca Hustedt, 1930 (uncertain, unassessed)
  » Forma Pinnularia lata f. thuringiaca Poretsky & Scheschukova, 1953 (uncertain, unassessed)
  » Forma Pinnularia lata f. truncata Mayer, 1925 (uncertain, unassessed)
  » Forma Pinnularia lata f. typica Mayer, 1925 (uncertain, unassessed)
  » Variety Pinnularia lata var. amplissima Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia lata var. amurensis Skvortzov, 2012 (uncertain)
  » Variety Pinnularia lata var. bacilliformis Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia lata var. biconstricta Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia lata var. bilineata Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia lata var. constricta Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia lata var. constricta Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia lata var. curtestriata Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia lata var. genuina Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia lata var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia lata var. integra M. Peragallo, 1921 (uncertain, unassessed)
  » Variety Pinnularia lata var. intermedia Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia lata var. karelica Mölder, 1951 (uncertain, unassessed)
  » Variety Pinnularia lata var. linearis (Berg) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia lata var. linearis Skvortzov, 2012 (uncertain)
  » Variety Pinnularia lata var. media Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia lata var. rostrata Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia lata var. sypniewski Hoppe, 1926 (uncertain, unassessed)
Species Pinnularia laterotundata B. van de Vijver & R. Zidarova, 2011
Species Pinnularia laticeps A.Cleve, 1934
  » Forma Pinnularia laticeps f. biundulata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia laticeps f. sphaerocephala Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia laticeps f. triundulata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia laticeps var. complanata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia laticeps var. laticeps Cleve-Euler, 1934 (uncertain, unassessed)
Species Pinnularia legumen Ehrenberg, 1843
  » Variety Pinnularia legumen var. interrupta H.P.Gandhi, 1959
  » Forma Pinnularia legumen f. florentina (Grunow in Cleve & Möller) Cleve, 1895 represented as Navicula florentina Grunow, 1877
  » Variety Pinnularia legumen var. decrescens (Grunow) Cleve-Euler, 1955 represented as Navicula legumen f. decrescens Grunow in Van Heurck, 1880
  » Variety Pinnularia legumen var. staurophora (Pantocsek) F.W. Mills, 1934 represented as Navicula legumen var. staurophora Pantocsek, 1903
  » Variety Pinnularia legumen var. undula (Schumann) Ant.Mayer, 1913 † represented as Navicula undula Schumann, 1862 †
  » Variety Pinnularia legumen var. undulata (M.Peragallo & Héribaud-Joseph) R.Ross, 1986 represented as Navicula divergens var. undulata M.Peragallo & Héribaud-Joseph, 1893
  » Forma Pinnularia legumen f. elliptica Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Pinnularia legumen f. inflata Tynni, 1982 † (uncertain, unassessed)
  » Forma Pinnularia legumen f. interrupta Cleve-Euler, 1915 (uncertain, unassessed)
  » Forma Pinnularia legumen f. interrupta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia legumen f. legumen Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Pinnularia legumen f. longa Cleve-Euler, 1915 (uncertain, unassessed)
  » Forma Pinnularia legumen f. minor Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia legumen f. normalis Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia legumen f. stauroptera Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia legumen f. subcapitata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia legumen f. subsolaris Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia legumen f. truncata Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia legumen f. vixundulata Swirenko, 1928 (uncertain, unassessed)
  » Variety Pinnularia legumen var. capitata Kobayasi in Kobayasi & Ando, 1977 (uncertain, unassessed)
  » Variety Pinnularia legumen var. cuneata Hustedt, 1943 (uncertain, unassessed)
  » Variety Pinnularia legumen var. elliptica Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia legumen var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia legumen var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia legumen var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia legumen var. kizaki Skvortzov & Noda, 1971 (uncertain, unassessed)
  » Variety Pinnularia legumen var. kizaki Skvortzov, 2012 (uncertain)
  » Variety Pinnularia legumen var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia legumen var. ornata Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia legumen var. sinica Skvortzov, 2012 (uncertain)
Species Pinnularia lenticula Cleve-Euler, 1955
Species Pinnularia lindanedbalovae B.van de Vijver & A.Moravcová, 2013
Species Pinnularia liouana Skvortzov
  » Variety Pinnularia liouana var. hinganica Skvortzov, 1976 (uncertain, unassessed)
Species Pinnularia livingstonensis R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia lonavlensis Gandhi, 1962
Species Pinnularia macilenta Ehrenberg, 1843
Species Pinnularia macra H.P.Gandhi, 1961
Species Pinnularia magnifica R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia maharashtrensis Sarode & Kamat, 1984
Species Pinnularia maior (Kützing) Cleve
  » Forma Pinnularia maior f. cruciata Tynni, 1976 (uncertain, unassessed)
  » Variety Pinnularia maior var. dolabrifera Zanon, 1941 (uncertain, unassessed)
Species Pinnularia major (Kützing) Rabenhorst, 1853
  » Forma Pinnularia major f. heroina (Schmidt in Schmidt et al.) Cleve, 1895 represented as Navicula heroina A.W.F.Schmidt, 1876
  » Forma Pinnularia major f. hyalina (Hustedt) Hustedt, 1930 represented as Pinnularia major var. hyalina (Hustedt) Skabichevskii, 1942
  » Forma Pinnularia major f. linearis (Cleve) Dippel, 1905
  » Forma Pinnularia major f. major (Kützing) Rabenhorst, 1853 represented as Frustulia major Kützing, 1833
  » Forma Pinnularia major f. neglecta (Mayer) Hustedt, 1930 represented as Pinnularia major var. neglecta Mayer, 1913
  » Forma Pinnularia major f. subacuta (Ehrenberg) Cleve, 1895 represented as Pinnularia subacuta Ehrenberg, 1854
  » Forma Pinnularia major f. transversa (Schmidt in Schmidt et al.) Cleve, 1891 represented as Navicula transversa A.Schmidt, 1876
  » Variety Pinnularia major var. andesitica (Pantocsek) Ross, 1950 represented as Navicula major var. andesitica Pantocsek, 1892
  » Variety Pinnularia major var. angulata (Lauby) F.W. Mills, 1934 represented as Navicula major var. angulata Lauby, 1910
  » Variety Pinnularia major var. conjugata (Turpin) Rabenhorst, 1864 represented as Bacillaria conjugata P.J.F.Turpin
  » Variety Pinnularia major var. convergentissima (Heribaud) McCall, 1933 represented as Navicula major var. convergentissima Héribaud, 1903
  » Variety Pinnularia major var. distinguenda (Cleve) F.W.Mills, 1934 † represented as Pinnularia viridis var. distinguenda Cleve, 1891 †
  » Variety Pinnularia major var. horrida (M.Peragallo & Héribaud-Joseph) F.W.Mills, 1934 represented as Navicula major var. horrida M.Peragallo & Héribaud-Joseph
  » Variety Pinnularia major var. latefasciata (Ostrup in Heribaud et al.) F.W. Mills, 1934 represented as Navicula major var. latefasciata Østrup in Héribaud et al., 1920
  » Variety Pinnularia major var. leptogongyla (Ehrenberg) Mayer, 1913 represented as Navicula leptogongyla Ehrenberg, 1843
  » Variety Pinnularia major var. pagesii (Heribaud in Heribaud et al.) F.W. Mills, 1934 represented as Navicula major var. pagesii Héribaud in Héribaud et al., 1920
  » Forma Pinnularia major f. constricta Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia major f. crassa Gutwinski, 1890 (uncertain, unassessed)
  » Forma Pinnularia major f. crucigera Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia major f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia major f. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia major f. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Forma Pinnularia major f. interrupta Rehakova, 1980 (uncertain, unassessed)
  » Forma Pinnularia major f. manschurica Skvortzow, 1928 (uncertain, unassessed)
  » Forma Pinnularia major f. minor Skvortzow, 1937 (uncertain, unassessed)
  » Forma Pinnularia major f. minor Cleve-Euler, 1948 (uncertain, unassessed)
  » Forma Pinnularia major f. parva Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia major f. scabrosa Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia major f. semicruciata A. Mayer, 1911 (uncertain, unassessed)
  » Forma Pinnularia major f. subconstricta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia major f. tropica Skvortzow, 1967 (uncertain, unassessed)
  » Forma Pinnularia major f. typica Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia major var. abreviata Pantocsek, 1913 (uncertain, unassessed)
  » Variety Pinnularia major var. ambigua Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
  » Variety Pinnularia major var. antiqua Lupikina, 1984 (uncertain, unassessed)
  » Variety Pinnularia major var. asymmetrica Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia major var. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Pinnularia major var. biconstricta Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia major var. capitata Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia major var. clavata Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia major var. convergens Meister, 1912 (uncertain, unassessed)
  » Variety Pinnularia major var. crassa Brébisson in Rabenhorst, 1864 (uncertain, unassessed)
  » Variety Pinnularia major var. crassa Rabenhorst, 1864 (uncertain, unassessed)
  » Variety Pinnularia major var. curta Anisimova, 1951 (uncertain, unassessed)
  » Variety Pinnularia major var. dokturowskii Skvortzov, 2012 (uncertain)
  » Variety Pinnularia major var. dubia McCall, 1933 (uncertain, unassessed)
  » Variety Pinnularia major var. elliptica Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia major var. elongata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia major var. flexuosa Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia major var. fragilis (Seczkina, 1960) Skvortzov, 2012 (uncertain)
  » Variety Pinnularia major var. heribaudii McCall, 1933 (uncertain, unassessed)
  » Variety Pinnularia major var. hustedti Meister, 1937 (uncertain, unassessed)
  » Variety Pinnularia major var. hyalina (Hustedt) Skabichevskii, 1942 (uncertain, unassessed)
  » Variety Pinnularia major var. kuetzingii Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia major var. lacustris Meister, 1912 (uncertain, unassessed)
  » Variety Pinnularia major var. major Mayer, 1912 (uncertain, unassessed)
  » Variety Pinnularia major var. medioconstricta Bleisch ex Rabenhorst, 1848-1860 (uncertain, unassessed)
  » Variety Pinnularia major var. neglecta Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia major var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia major var. paludosa Meister, 1912 (uncertain, unassessed)
  » Variety Pinnularia major var. pulchella Boyer, 1916 † (uncertain, unassessed)
  » Variety Pinnularia major var. sagensis Skvortzow, 1937 (uncertain, unassessed)
  » Variety Pinnularia major var. sendaiensis Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia major var. sendaiensis Hustedt ex Simonsen, 1987 (uncertain, unassessed)
  » Variety Pinnularia major var. shantungensis Skvortzow, 1937 (uncertain, unassessed)
  » Variety Pinnularia major var. sibirica Skvortzov, 2012 (uncertain)
  » Variety Pinnularia major var. sinica Skvortzov, 2012 (uncertain)
  » Variety Pinnularia major var. skabitschewskii Skvortzov, 2012 (uncertain)
  » Variety Pinnularia major var. sublinearis Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia major var. turfosa Skvortzov, 1971 (uncertain, unassessed)
  » Variety Pinnularia major var. turgidula Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia major var. uligenosa Meister (uncertain, unassessed)
  » Variety Pinnularia major var. woerthensis A.Mayer, 1931 (uncertain, unassessed)
Species Pinnularia manausensis A.Cavalcante Pereira & L.Carvalho Torgan, 2014
Species Pinnularia marathwadensis Sarode & Kamat, 1984
Species Pinnularia megaloptera Ehrenberg, 1854
Species Pinnularia meridiana Metzeltin & Krammer, 1998
Species Pinnularia mesolepta (Ehrenberg) W.Smith, 1853
  » Variety Pinnularia mesolepta var. indica Gandhi, 1960
  » Forma Pinnularia mesolepta f. angusta (Cleve) Hustedt, 1930
  » Forma Pinnularia mesolepta f. genuina (Grunow) Gutwinski, 1887 represented as Navicula mesolepta var. genuina Grunow, 1860
  » Forma Pinnularia mesolepta f. mesolepta (Ehrenberg) W. Smith, 1853 represented as Navicula mesolepta f. mesolepta Ehrenberg, 1843
  » Forma Pinnularia mesolepta f. stauroneiformis (Grunow) Gutwinski, 1891 represented as Navicula mesolepta var. stauroneiformis Grunow, 1860
  » Variety Pinnularia mesolepta var. africana (Fritsch & Rich) O.C. Schmidt, 1928 represented as Navicula mesolepta var. africana Fritsch & Rich, 1924
  » Variety Pinnularia mesolepta var. africana (Fritsch & Rich) Mills, 1928 represented as Navicula mesolepta var. africana Fritsch & Rich, 1924
  » Variety Pinnularia mesolepta var. alberti (Heribaud) F.W. Mills, 1934 represented as Navicula mesolepta var. alberti Héribaud, 1903
  » Variety Pinnularia mesolepta var. constricta (Grunow) Mayer, 1913 represented as Navicula mesolepta var. constricta Grunow, 1860
  » Variety Pinnularia mesolepta var. genuina (Grunow) Meister, 1912 represented as Navicula mesolepta var. genuina Grunow, 1860
  » Variety Pinnularia mesolepta var. gibberula (Hustedt) K.Krammer, 1992 represented as Pinnularia interrupta var. gibberula Hustedt, 1950
  » Variety Pinnularia mesolepta var. intermedia (A.Robert) K.Krammer, 1992 represented as Pinnularia interrupta var. intermedia Robert, 1962
  » Variety Pinnularia mesolepta var. nodosa (Ehrenberg) Brun, 1880 represented as Navicula nodosa f. nodosa Ehrenberg, 1838
  » Variety Pinnularia mesolepta var. polyonca (L.A.Brébisson) Cleve, 1895 represented as Navicula polyonca Brébisson, 1849
  » Variety Pinnularia mesolepta var. producta (Grunow) Gutwinski, 1891 represented as Navicula mesolepta var. producta Grunow, 1860
  » Variety Pinnularia mesolepta var. protensa (W. West) F.W. Mills, 1934 represented as Navicula mesolepta var. protensa W. West, 1912
  » Variety Pinnularia mesolepta var. saintignyi (Heribaud) F.W. Mills, 1934 represented as Navicula mesolepta var. saintignyi Héribaud, 1902
  » Variety Pinnularia mesolepta var. stauroneiformis (Grunow) Cleve, 1895 represented as Navicula mesolepta var. stauroneiformis Grunow, 1860
    » Forma Pinnularia mesolepta var. stauroneiformis f. hankensis Skvortzov, 1929 accepted as Pinnularia mesolepta f. hankensis Skvortzow, 1929 (Art.24.I ICBN)
    » Forma Pinnularia mesolepta var. stauroneiformis f. semicruciata Ant.Mayer accepted as Pinnularia mesolepta f. semicruciata Mayer, 1917 (Code article 24.1 ICBN)
    » Forma Pinnularia mesolepta var. stauroneiformis f. subundulata Skvortzov (uncertain, There is also a taxon Pinnularia mesolepta var. stauroneiformis f. subundulata Cleve-Euler)
  » Variety Pinnularia mesolepta var. termes (Van Heurck) F.W. Mills, 1934 represented as Navicula mesolepta var. termes (Ehrenberg) Van Heurck
  » Forma Pinnularia mesolepta f. alpine Brun, 1880 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. interrupta Cleve-Euler, 1922 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. interrupta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. laticeps G.Krasske, 1943 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. magna (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. minuta Cleve-Euler, 1922 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. recta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. semicruciata Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. semicruciata Mayer, 1917 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. semifasciata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. sinica Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. stauroneiformis Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. subundulata Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. subundulata Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. tenuis A. Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. typica Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. vix (uncertain, unassessed)
    » Subforma Pinnularia mesolepta f. vix undulata Hustedt, 1957 (uncertain, unassessed)
  » Forma Pinnularia mesolepta f. vixundulata Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. crassior Cleve, 1891 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. elongata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. interrupta Brun, 1880 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. interrupta (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. laticeps (Krasske) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. medioconstricta Manguin, 1952 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. nivalis (Ehrenberg) J.-J.Brun (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. robusta N.Foged, 1981 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. selengensis Skvortzov, 2012 (uncertain)
  » Variety Pinnularia mesolepta var. seminuda Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. turbulenta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia mesolepta var. vasta Mayer, 1916 (1917) (uncertain, unassessed)
Species Pinnularia meyerii Skvortzov
  » Variety Pinnularia meyerii var. hinganica Skvortzov, 1976 (uncertain, unassessed)
Species Pinnularia micevskii Z.Levkov, A.Pavlov & T.Nakov, 2013
Species Pinnularia microcapitata B.Van de Vijver, B.Chattová & D.Metzeltin, 2012
Species Pinnularia microstauroides R.Zidarova, K.Kopalová & B.Van de Vijver, 2012
Species Pinnularia microstauron (Ehrenberg) Cleve, 1891
  » Forma Pinnularia microstauron f. parva Manguin, 1939
  » Forma Pinnularia microstauron f. biundulata (O.Müller) Hustedt, 1930
  » Forma Pinnularia microstauron f. brebissonii (Kützing) Mayer, 1913 represented as Navicula brebissonii f. brebissonii Kützing, 1844
  » Forma Pinnularia microstauron f. diminuta (Grunow) Hustedt, 1930 represented as Navicula brebissonii var. diminuta Grunow, 1880
  » Forma Pinnularia microstauron f. linearis (Otto Müller) Hustedt, 1930 represented as Pinnularia brebissonii f. linearis Otto Müller, 1898
  » Forma Pinnularia microstauron f. microstauron (Ehrenberg) Cleve, 1891 represented as Stauroptera microstauron Ehrenberg, 1843
  » Forma Pinnularia microstauron f. recta (Skvortzow) F.W. Mills, 1934 represented as Pinnularia microstauron var. brebissonii Skvortzow, 1930
  » Variety Pinnularia microstauron var. biundulata (Otto Müller) Mayer, 1913 represented as Pinnularia microstauron f. biundulata (O.Müller) Hustedt, 1930
  » Variety Pinnularia microstauron var. brébissonii (Kützing) Hustedt, 1930 represented as Navicula brebissonii f. brebissonii Kützing, 1844
  » Variety Pinnularia microstauron var. diminuta (Grunow) Mayer, 1913 represented as Navicula brebissonii var. diminuta Grunow, 1880
  » Variety Pinnularia microstauron var. subproducta (Grunow) Mills represented as Navicula brebissonii var. subproducta Grunow in Van Heurck, 1880
  » Variety Pinnularia microstauron var. sulcata (Heribaud) F.W. Mills, 1934 represented as Navicula bicapitata var. sulcata Héribaud, 1903
  » Forma Pinnularia microstauron f. abnormis Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. altitudinalis Manguin, 1964 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. ambigua Meister, 1912 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. angusta Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. capitata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. ceylonica (Skvortzow) F.W. Mills, 1934 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. cruciata Torka, 1906 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. curta Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. curta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. curta Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. diminuta Matvienko, 1941 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. dubia Manguin, 1964 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. genuina A. Mayer, 1911 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. lanceolata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. lanceolata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. lata Hustedt, 1948 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. lata Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. linearis Esyreva, 1935 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. longirostris Fontell, 1917 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. major Hustedt, 1910 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. medioinflata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minima Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minor Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minor Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minuta Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minuta (Mayer) F.W. Mills, 1934 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minuta Mayer, 1939 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. minutissima Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. normalis Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. ornata Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. pygmaea Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. robusta Foged, 1971 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. semicruciata Frenguelli, 1933 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. semicruciata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia microstauron f. semicruciata Otto Müller, 1898 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. adirondackensis K.E. Camburn & D.F. Charles, 2000 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. angusta K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. australis Manguin, 1854 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. brasiliensis Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. brebissonii Skvortzow, 1930 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. brebissonii Foged, 1964 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. capitata Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. cuneata Gallik, 1930 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. dahomeyensis Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. diminuta Shirshov, 1935 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. elongata Manguin, 1954 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. fuelensis Greguss & Weber, 1938 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. kizakensis Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. lanceolata Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. linearis (Otto Müller) Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. longirostris (Fontell) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. lunicus K.E. Camburn & D.F. Charles, 2000 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. major Frenguelli & Cordini, 1937 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. major (Hustedt) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. mediocostata Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. nonfasciata Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. notata (M. Peragallo & Heribaud in Heribaud) Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. ornata (Otto Müller) Schonfeldt, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. ovalis Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. parallela Krieger in Kolkwitz & Krieger, 1936 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. perrostrata Messikommer, 1949 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. pumila Cleve-Euler, 1922 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. recta Skvortzow, 1930 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. rhomboides Hirano, 1964 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. rostrata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. subundulata Mayer, 1917 (uncertain, unassessed)
  » Variety Pinnularia microstauron var. tenuirostris Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
Species Pinnularia minor (Kutzing) Cleve
  » Variety Pinnularia minor var. jeniseyensis Skvortzow, 1971 (uncertain, unassessed)
Species Pinnularia montium Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018
Species Pinnularia myriamiae B.Van de Vijver, B.Chattová & D.Metzeltin, 2012
Species Pinnularia mysorense Gandhi, 1959
Species Pinnularia neglecta (Mayer) Berg, 1949
Species Pinnularia nelsonii A.Cavalcante Pereira & L.Carvalho Torgan, 2014
Species Pinnularia nobilis (Ehrenberg) Ehrenberg, 1843
  » Forma Pinnularia nobilis f. horrida (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia nobilis var. horrida Cleve-Euler, 1934
  » Forma Pinnularia nobilis f. nobilis (Ehrenberg) Ehrenberg, 1843 represented as Navicula nobilis var. nobilis Ehrenberg, 1840
  » Variety Pinnularia nobilis var. cuneata (Frenguelli) F.W. Mills, 1934 represented as Navicula nobilis var. cuneata Frenguelli, 1923
  » Variety Pinnularia nobilis var. fossilis (Pantocsek) Cleve, 1895 represented as Navicula nobilis var. fossilis Pantocsek, 1889
  » Variety Pinnularia nobilis var. gracilis (M. Peragallo & Heribaud in Heribaud) F.W. Mills, 1934 represented as Navicula nobilis var. gracilis M. Peragallo & Héribaud in Héribaud, 1893
  » Variety Pinnularia nobilis var. interrupta (Pantocsek) F.W. Mills, 1934 represented as Navicula nobilis var. interrupta Pantocsek, 1903
  » Variety Pinnularia nobilis var. neogena (Grunow) Cleve, 1895 represented as Navicula nobilis var. neogena Grunow, 1882
  » Forma Pinnularia nobilis f. brevis Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nobilis f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nobilis f. intermedia Dippel, 1905 (uncertain, unassessed)
  » Forma Pinnularia nobilis f. kamtschatica Lupikina, 1984 (uncertain, unassessed)
  » Forma Pinnularia nobilis f. minor Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. constricta Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. densestriata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. distincta Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. gracillima Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. horrida Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. inariensis K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. intermedia (Dippel) Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. linearis K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. major (Kützing) J.-J.Brun (uncertain, unassessed)
  » Variety Pinnularia nobilis var. manschurica Skvortzow, 1928 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. minuta Skvortzov, 2012 (uncertain)
  » Variety Pinnularia nobilis var. mirabilis Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. obesa Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. parallela Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. regularis Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. rupestris Swirenko, 1922 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. soochowensis Skvortzow, 1946 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. subparallela Skvortzov, 1971 (uncertain, unassessed)
  » Variety Pinnularia nobilis var. triundulata Skvortzow, 1946 (uncertain, unassessed)
Species Pinnularia nodosa (Ehrenberg) W.Smith, 1856
  » Forma Pinnularia nodosa f. nodosa (Ehrenberg) W. Smith, 1856 represented as Navicula nodosa f. nodosa Ehrenberg, 1838
  » Variety Pinnularia nodosa var. arverna (M. Peragallo in Heribaud et al.) F.W. Mills, 1934 represented as Navicula nodosa var. arverna M. Peragallo in Héribaud et al., 1920
  » Variety Pinnularia nodosa var. formica (Ehrenberg) Cleve, 1895 † represented as Navicula formica Ehrenberg, 1843 †
  » Variety Pinnularia nodosa var. genuina (Cleve) Mayer, 1913 represented as Pinnularia nodosa f. genuina Cleve, 1895
  » Variety Pinnularia nodosa var. robusta (Foged) K.Krammer, 2000 represented as Pinnularia mesolepta var. robusta N.Foged, 1981
  » Variety Pinnularia nodosa var. stauroneiformis (Lauby) F.W. Mills, 1934 represented as Navicula nodosa var. stauroneiformis Lauby, 1910
  » Forma Pinnularia nodosa f. capitata Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. constricta Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Pinnularia nodosa f. genuina Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. genuina Meister, 1912 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. interrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. interrupta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. interrupta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. interrupta Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. minor Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. pseudogracillima Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. semicruciata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. semicruciata Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. truncata Fusey, 1951 (uncertain, unassessed)
  » Forma Pinnularia nodosa f. ventricosa Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. debegenica Cholnoky, 1954 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. japonica Kobayasi in Kobayasi & Ando, 1977 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. leptostauron Matvienko, 1938 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. maakii Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. montana (Skvortzov, 2012) (uncertain)
  » Variety Pinnularia nodosa var. palibinii Poretsky ex Proschkina-Lavrenko, 1950 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. palibinii Poretzky, 1953 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. percapitata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. pseudogracillima Ant.Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. recta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. sculpta Manguin, 1941 (uncertain, unassessed)
  » Variety Pinnularia nodosa var. spitsbergensis Foged, 1971 (uncertain, unassessed)
Species Pinnularia nonaestuarii M.S.Kulikovskiy, H.Lange-Bertalot, A.Witkowski & N.I.Dorofeyuk in Kulikovskiy et al., 2010
Species Pinnularia nordica M.S.Kulikovskiy, Lange-Bert. & Witkowski in Kulikovskiy et al., 2010
Species Pinnularia obliquestriata Cleve-Euler, 1955
Species Pinnularia obscura Krasske, 1932
  » Variety Pinnularia obscura var. constricta Hustedt, 1943 (uncertain, unassessed)
  » Variety Pinnularia obscura var. constricta Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia obscura var. obscura Krasske, 1932 (uncertain, unassessed)
  » Variety Pinnularia obscura var. sublinearis Messikommer, 1945 (uncertain, unassessed)
Species Pinnularia ovalis Hilse, 1861
Species Pinnularia palidis Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018
Species Pinnularia paliobducta Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018
Species Pinnularia paludosa Liu & Wang, 2010
Species Pinnularia panhalgarhensis H.P.Gandhi, 1959
Species Pinnularia paragracillima M.S.Kulikovskiy, Lange-Bert & Witkowski, 2010
Species Pinnularia parva Ehrenberg
  » Forma Pinnularia parva f. parva (Ehrenberg) Gregory, 1854 represented as Stauroptera parva Ehrenberg, 1843
  » Variety Pinnularia parva var. brevistriata (Grunow in Van Heurck) Cleve-Euler, 1955 represented as Navicula brevistriata Tempère & Peragallo, 1889-1895
  » Forma Pinnularia parva f. cruciata Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia parva f. curta Bleisch ex Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia parva f. interrupta Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia parva f. lagerstedtii Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia parva var. continua Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia parva var. curta Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia parva var. genuina Mayer, 1916 (uncertain, unassessed)
  » Variety Pinnularia parva var. minuta Østrup, 1918 (uncertain, unassessed)
  » Variety Pinnularia parva var. novae zealandiae Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia parva var. parvula Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia parva var. semicruciata Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Pinnularia parva var. subtilis Schulz, 1926 (uncertain, unassessed)
Species Pinnularia parvula (Ralfs) Cleve-Euler, 1922
  » Forma Pinnularia parvula f. parvula sensu Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia parvula f. semiinterrupta Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia parvula var. cruciata Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia parvula var. minuta sensu Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Pinnularia parvula var. parvula Cleve-Euler, 1922 (uncertain, unassessed)
Species Pinnularia parvulum Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia paucicostis Gandhi, 1966
Species Pinnularia perlanceolata B. van de Vijver & R. Zidarova, 2011
Species Pinnularia perpolyoncoides M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
Species Pinnularia platycephala (Ehrenberg) Cleve, 1891
  » Forma Pinnularia platycephala f. platycephala (Ehrenberg) Cleve, 1891 represented as Stauroptera platycephala Ehrenberg, 1854
  » Forma Pinnularia platycephala f. angustior Skvortzow, 1936 (uncertain, unassessed)
  » Forma Pinnularia platycephala f. hattoriana Meister, 1914 (uncertain, unassessed)
  » Forma Pinnularia platycephala f. ornata H.E.Sovereign, 1963 (uncertain, unassessed)
  » Variety Pinnularia platycephala var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia platycephala var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia platycephala var. minor Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia platycephala var. nipponica Skvortzov & Noda, 1971 (uncertain, unassessed)
  » Variety Pinnularia platycephala var. obtusa Jouse in Poretzky, Jouse & Sheshukova, 1933 (1934) (uncertain, unassessed)
Species Pinnularia pseudodivergentissima B.van de Vijver, A.Moravcová, W.-H.Kusber & J.Neustupa, 2013
Species Pinnularia pseudoluculenta Gandhi, 1960
Species Pinnularia pseudomacilenta H.Lange-Bertalot, M.S.Kulikovskiy, A.Witkovski & N.I.Dorofeyuk in Kulikovskiy et al., 2010
Species Pinnularia pseudomicrostauron H.P.Gandhi, 1962
Species Pinnularia pseudosinistra Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia pulchra Østrup, 1897
  » Variety Pinnularia pulchra var. angusta (Cleve) Krammer, 1985 represented as Pinnularia mesolepta f. angusta (Cleve) Hustedt, 1930
  » Forma Pinnularia pulchra f. magna Brun, 1901 (uncertain, unassessed)
  » Forma Pinnularia pulchra f. pulchra Østrup, 1897 (uncertain, unassessed)
  » Variety Pinnularia pulchra var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia pulchra var. magna Brun, 1901 (uncertain, unassessed)
  » Variety Pinnularia pulchra var. subtilis Schimanski, 1985 (uncertain, unassessed)
Species Pinnularia pusilla H.P.Gandhi, 1959
Species Pinnularia qii Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia quadratarea (A.Schmidt) Cleve, 1895
  » Variety Pinnularia quadratarea var. stuxbergii (Cleve) Cleve
  » Forma Pinnularia quadratarea f. cuneata (Østrup) Gran, 1900 represented as Navicula stuxbergii var. cuneata Østrup, 1895
  » Forma Pinnularia quadratarea f. denestriata (Cleve) Gran, 1900 represented as Pinnularia quadratarea var. densestriata Cleve, 1896
  » Forma Pinnularia quadratarea f. gibbosa (Østrup) Gran, 1900 represented as Navicula pinnularia var. gibbosa Østrup, 1895
  » Forma Pinnularia quadratarea f. maxima (Østrup) Gran, 1900 represented as Navicula pinnularia var. maxima Østrup, 1895
  » Forma Pinnularia quadratarea f. quadratarea (Schmidt) Cleve, 1895 represented as Navicula quadratarea var. quadratarea Schmidt, 1874
  » Forma Pinnularia quadratarea f. subcontinua (Grunow) Gran, 1900 represented as Navicula stuxbergii var. subcontinua Cleve, 1883
  » Forma Pinnularia quadratarea f. subglabra (Østrup) Gran, 1900 represented as Navicula stuxbergii var. subglabra Østrup, 1895
  » Forma Pinnularia quadratarea f. theelii (Cleve) Gran represented as Navicula theelii Cleve in Cleve & Grunow, 1880
  » Variety Pinnularia quadratarea var. amphiglottis (Grunow) Cleve, 1895 represented as Navicula stuxbergii var. amphiglottis Grunow, 1884
  » Variety Pinnularia quadratarea var. antarctica (M. Peragallo) Frenguelli & Orlando, 1958 represented as Navicula quadratarea var. antarctica M. Peragallo, 1921
  » Variety Pinnularia quadratarea var. asymmetrica (Cleve) Cleve, 1895 represented as Navicula pinnularia var. asymmetrica Cleve, 1883
  » Variety Pinnularia quadratarea var. baltica (Grunow in Cleve & Grunow) Cleve, 1895 represented as Navicula pinnularia var. baltica Grunow in Cleve & Grunow, 1880
  » Variety Pinnularia quadratarea var. bicontracta (Østrup) Gran, 1900 represented as Navicula pinnularia var. bicontracta Østrup, 1895
  » Variety Pinnularia quadratarea var. constricta (Østrup) Heiden, 1874 represented as Navicula pinnularia f. constricta Østrup, 1895
  » Variety Pinnularia quadratarea var. fluminensis (Grunow) Cleve, 1895 represented as Navicula fluminensis var. fluminensis Grunow, 1860
  » Variety Pinnularia quadratarea var. gibbosa (Østrup) Heiden in Schmidt et al., 1905 represented as Navicula pinnularia var. gibbosa Østrup, 1895
  » Variety Pinnularia quadratarea var. interrupta (Cleve) Cleve, 1895 represented as Navicula pinnularia var. interrupta Cleve, 1883
  » Variety Pinnularia quadratarea var. leptostauron (Grunow) Cleve, 1895 represented as Navicula stuxbergii var. leptostauron Cleve, 1883
  » Variety Pinnularia quadratarea var. loczyi (Pantocsek) Cleve, 1895 represented as Navicula loczyi Pantocsek, 1889
  » Variety Pinnularia quadratarea var. maxima (Østrup) Boyer, 1927 represented as Navicula pinnularia var. maxima Østrup, 1895
  » Variety Pinnularia quadratarea var. minima (Østrup) Boyer, 1927 represented as Navicula pinnularia var. minima Østrup, 1895
  » Variety Pinnularia quadratarea var. minor (Grunow) Cleve, 1896 represented as Navicula fluminensis var. minor Grunow, 1880
  » Variety Pinnularia quadratarea var. minor (Østrup) Heiden in Schmidt et al., 1905 represented as Navicula pinnularia var. minor Østrup, 1895
  » Variety Pinnularia quadratarea var. seychellensis (Grunow in Cleve & Grunow) Cleve, 1895 represented as Navicula pinnularia var. seychellensis Grunow in Cleve & Grunow, 1880
  » Variety Pinnularia quadratarea var. soederlundii (Cleve) Cleve, 1896 represented as Navicula pinnularia var. soederlundii Cleve, 1880
  » Variety Pinnularia quadratarea var. subconstricta (Østrup) Heiden in Schmidt et al., 1905 represented as Navicula pinnularia var. subconstricta Østrup, 1895
  » Variety Pinnularia quadratarea var. subcontinua (Grunow) Cleve represented as Navicula stuxbergii var. subcontinua Cleve, 1883
  » Variety Pinnularia quadratarea var. subglabra (Østrup) Poulin & Cardinal, 1982 represented as Navicula stuxbergii var. subglabra Østrup, 1895
  » Variety Pinnularia quadratarea var. subproducta (Grunow) Cleve, 1896 represented as Navicula pinnularia var. subproducta Grunow, 1880
  » Variety Pinnularia quadratarea var. tahitensis (Grunow in Cleve & Grunow) Cleve, 1895 represented as Navicula pinnularia var. tahitensis Grunow in Cleve & Grunow, 1880
  » Variety Pinnularia quadratarea var. theelii (Cleve in Cleve & Grunow) Cleve, 1895 represented as Navicula theelii Cleve in Cleve & Grunow, 1880
  » Forma Pinnularia quadratarea f. constricta (Østrup) Heiden in Schmidt et al., 1905 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. cuneata Usachev, 1949 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. grunowii (Schulz) Proschkina-Lavrenko, 1950 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. grunowii Schulz, 1926 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. interrupta Heiden in Schmidt et al., 1905 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. interrupta Heiden in A. Schmidt, 1905 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. minima (Østrup) Gran, 1900 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. minor Zabelina, 1939 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. minuta Usachev, 1949 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. stuxbergii (Cleve in Cleve & Grunow) Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. subconstricta Usachev, 1949 (uncertain, unassessed)
  » Forma Pinnularia quadratarea f. subglabra Usachev, 1949 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. bicuneata H.Heiden (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. capitata Heiden in Schmidt et al., 1905 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. circumpolaris Heiden in Schmidt et al., 1905 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. constricta Schulz (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. cuneata Østrup in Schmidt et al., 1905 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. densestriata Cleve, 1896 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. dubia Heiden in Schmidt et al., 1905 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. dulcicola Manguin in Bourrelly & Manguin, 1954 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. kerguelensis (Grunow) Cleve (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. lanceolata Dolmatova in Dolmatova, Kuklina & Oreshkina, 1984 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. latefasciata Heiden in Schmidt et al., 1905 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. patrickae Poulin & Cardinal, 1982 (uncertain, unassessed)
  » Variety Pinnularia quadratarea var. undulata Skvortzow, 1932 (uncertain, unassessed)
Species Pinnularia quesadae B. van de Vijver & R. Zidarova, 2011
Species Pinnularia radiosa W.Smith, 1853
Species Pinnularia rectangularis Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia ruttneri Hustedt, 1934
  » Variety Pinnularia ruttneri var. lauenbergiana Hustedt, 1950 (uncertain, unassessed)
  » Variety Pinnularia ruttneri var. paludosa Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia ruttneri var. ruttneri Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
Species Pinnularia sagittata Gandhi, 1959
Species Pinnularia sahyadrens Gandhi, 1966
Species Pinnularia sakulensis Vyverman & Compère, 1991
Species Pinnularia sakurajimensis Ishii & Ji.Tanaka, 2011
Species Pinnularia saprotolerans H.Lange-Bertalot & D.Metzeltin, 2014
Species Pinnularia scaettae
  » Variety Pinnularia scaettae var. krasskei Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia scaettae var. scaettae Zanon, 1938 (uncertain, unassessed)
  » Variety Pinnularia scaettae var. subrostrata Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
Species Pinnularia schoelynckiana Van de Vijver, Scholberg & Lebouvier
Species Pinnularia seignavouxensis Beauger, Allain & Van de Vijver in Beauger et al., 2020
Species Pinnularia semicruciata (Schmidt) Cleve, 1895 †
Species Pinnularia semiinflata (E.V.Østrup) H.H.Gran
Species Pinnularia shii Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018
Species Pinnularia shivae Cejudo-Figueiras, S.Blanco & Álvarez-Blanco, 2012
Species Pinnularia sikkimensis S.K.Das, C.Radhakrishnan, Kociolek & B.Karthick in Das et al., 2020
Species Pinnularia simplex Gandhi, 1960
Species Pinnularia sonyae M.S.Kulikovskiy, H.Lange-Bertalot, A.Witkowski & N.I.Dorofeyuk, 2010
Species Pinnularia spitsbergensis Cleve, 1895
Species Pinnularia spitzbergensis
  » Variety Pinnularia spitzbergensis var. hinganica Skvortzov, 1976 (uncertain, unassessed)
Species Pinnularia splendens Kociolek in Kociolek et al., 2014
Species Pinnularia stauntonii (Grunow) Cleve, 1896
Species Pinnularia stomatophora (Grunow) Cleve, 1895
  » Forma Pinnularia stomatophora f. jogensis Gandhi, 1970
  » Forma Pinnularia stomatophora f. gibbosa (Hustedt) Cleve-Euler, 1942 represented as Pinnularia stomatophora var. gibbosa F.Hustedt, 1942
  » Forma Pinnularia stomatophora f. stomatophora (Grunow in Schmidt et al.) Cleve, 1895 represented as Navicula stomatophora f. stomatophora Grunow in Schmidt et al., 1876
  » Forma Pinnularia stomatophora f. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia stomatophora f. gibbosa Foged, 1972 (uncertain, unassessed)
  » Forma Pinnularia stomatophora f. ornata A. Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia stomatophora f. recta Hustedt, 1938 (uncertain, unassessed)
  » Forma Pinnularia stomatophora f. triundulata C.W.Fontell, 1917 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. bergii Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. continua Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. debilis Fusey, 1948 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. depauperata Manguin in Allorge & Manguin, 1941 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. gibbosa F.Hustedt, 1942 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. irregularis K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. salina Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia stomatophora var. triundulata Hustedt, 1942 (uncertain, unassessed)
Species Pinnularia streptoraphe Cleve, 1891
  » Variety Pinnularia streptoraphe var. minor (Cleve) Cleve, 1895 † represented as Pinnularia viridis var. minor Cleve, 1891 †
  » Forma Pinnularia streptoraphe f. constricta Tynni, 1976 (uncertain, unassessed)
  » Forma Pinnularia streptoraphe f. minor Krasske, 1938 (uncertain, unassessed)
  » Forma Pinnularia streptoraphe f. minor Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia streptoraphe f. streptoraphe Cleve, 1891 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. alaskaensis Foged, 1981 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. argunensis Skvortzov, 2012 (uncertain)
  » Variety Pinnularia streptoraphe var. asiatica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. gibbosa A. Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. interrupta Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. minor Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. muscicola Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. neglecta Mayer, 1933 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. parva K.Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. savona K.Krammer, 2000 † (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. styliformis (Grunow) Cleve (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. subacuta Frenguelli, 1942 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. subconstricta Østrup, 1901 (uncertain, unassessed)
  » Variety Pinnularia streptoraphe var. tumida Skvortzov, 2012 (uncertain)
Species Pinnularia subaldenii Wang & Liu, 2010
Species Pinnularia subalpina A.Pavlov & Z.Levkov, 2013
Species Pinnularia subbrebissonii Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia subcapitata W.Gregory, 1856
  » Forma Pinnularia subcapitata f. elliptica (Krasske) Hustedt, 1930 represented as Pinnularia subcapitata var. elliptica Krasske, 1925
  » Forma Pinnularia subcapitata f. hilseana (Janisch in Hilse; Janisch in Rabenhorst) Otto Müller, 1898 represented as Pinnularia hilseana f. hilseana Janisch in Hilse, 1860
  » Forma Pinnularia subcapitata f. paucistriata (Grunow in Van Heurck) Cleve, 1895 represented as Navicula subcapitata var. paucistriata Grunow, 1880
  » Forma Pinnularia subcapitata f. stauroneiformis (Van Heurck) Otto Müller, 1898 represented as Navicula subcapitata var. stauroneiformis van Heurck, 1880
  » Variety Pinnularia subcapitata var. hybrida (Grunow) J.Frenguelli, 1933 represented as Navicula bicapitata var. hybrida Grunow, 1880
  » Variety Pinnularia subcapitata var. koreana (Skvortzow) Skvortzow, 1946 represented as Pinnularia interrupta var. koreana Skvortzow, 1929
  » Forma Pinnularia subcapitata f. constricta Berg, 1945 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. constricta Hustedt, 1937 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. constricta Skvortzow, 1938 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. divergens F.Hustedt, 1950 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. elliptica Krasske, 1932 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. jeniseyensis Skvortzov, 1971 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. koreana Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. lata Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. latior Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. linearis Manguin, 1943 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. plana Carter, 1966 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. subcapitata Gregory, 1856 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. subconstricta Cleve-Euler, 1939 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. subcuneata Manguin, 1962 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. subcuneata Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. subtypica Manguin, 1943 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. subundulata Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. tenua Skvortzow, 1938 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. typica Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. undulata Otto Müller ex Hustedt, 1930 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. undulata Matvienko, 1950 (uncertain, unassessed)
  » Forma Pinnularia subcapitata f. undulata Vodop'yan, 1979 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. abbreviata Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. acuminata Krasske in Hustedt, 1930 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. appendiculata Krieger, 1930 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. azorica Holmboe, 1901 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. distans Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. elliptica Krasske, 1925 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. elongata Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. hilseana Mayer, 1917 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. lanceolata Manguin, 1943 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. lapponica Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. lata Skvortzow, 1946 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. mingiana Skvortzov, 2012 (uncertain)
  » Variety Pinnularia subcapitata var. robusta Fontell, 1917 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. semicruciata Metzeltin & Krammer, 1998 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. sinica Skvortzow, 1935 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. stauroneiformis Østrup, 1900 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. sublanceolata Petersen, 1928 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. subrobusta Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. subrostrata Krammer, 1992 (uncertain, unassessed)
  » Variety Pinnularia subcapitata var. subundulata (Otto Müller) Schonfeldt, 1913 (uncertain, unassessed)
Species Pinnularia subgraciloides Gandhi, 1970
Species Pinnularia subnotabilis Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia subobscura Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia subrostrata (A.Cleve) Cleve-Euler, 1955
Species Pinnularia subsimilis Gandhi, 1970
Species Pinnularia tabellaria Ehrenberg, 1843
  » Variety Pinnularia tabellaria var. stauroneiformis Temp. & Peragallo
  » Variety Pinnularia tabellaria var. acrosphaeriaformis (Tempère & Peragallo) F.W. Mills, 1934 represented as Navicula tabellaria var. acrosphaeriaformis Tempère & Peragallo, 1910
  » Variety Pinnularia tabellaria var. stauroneiformis (van Heurck) Boyer, 1927 represented as Navicula tabellaria var. stauroneiformis van Heurck, 1880
  » Variety Pinnularia tabellaria var. acrosphaeria (G.L.Rabenhorst) G.L.Rabenhorst (uncertain, unassessed)
  » Variety Pinnularia tabellaria var. americana Meister, 1912 (uncertain, unassessed)
  » Variety Pinnularia tabellaria var. sagensis (Skvortzov) Skvortzov & Noda, 1971 (uncertain, unassessed)
  » Variety Pinnularia tabellaria var. sinica Skvortzov, 2012 (uncertain)
  » Variety Pinnularia tabellaria var. tabellaria Ehrenberg, 1843 (uncertain, unassessed)
  » Variety Pinnularia tabellaria var. wolfensbergeri Meister, 1912 (uncertain, unassessed)
Species Pinnularia tenuis Gregory, 1854
Species Pinnularia tenuistriata Hustedt
Species Pinnularia tibetana Hustedt
  » Variety Pinnularia tibetana var. argunensis Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia tibetana var. siamense Hirano, 1967 (uncertain, unassessed)
  » Variety Pinnularia tibetana var. stauroneiformis Skvortzow, 1946 (uncertain, unassessed)
  » Variety Pinnularia tibetana var. tibetana Hustedt, 1922 (uncertain, unassessed)
  » Variety Pinnularia tibetana var. truncata Skvortzow, 1946 (uncertain, unassessed)
Species Pinnularia transversa (A.Schmidt) Mayer, 1939
Species Pinnularia trevelyana (Donkin) Rabenhorst, 1864
Species Pinnularia trifonovae Kulikovskiy, Lange-Bertalot, Witkowski & Dorofeyuk in Kulikovskiy et al., 2010
Species Pinnularia tropica Hustedt
  » Variety Pinnularia tropica var. densestriata Rivera, 1974 (uncertain, unassessed)
  » Variety Pinnularia tropica var. subtropica Cholnoky, 1957 (uncertain, unassessed)
  » Variety Pinnularia tropica var. tropica Hustedt, 1949 (uncertain, unassessed)
Species Pinnularia tupensis A.Cavalcante Pereira, S.Melo & L.Carvalho Torgan, 2014
Species Pinnularia valdecontroversa Lange-Bertalot, Witkowski & Bąk in Bak et al., 2017
Species Pinnularia venkateswarii Sarode & Kamat, 1984
Species Pinnularia vidarbhensis Sarode & Kamat, 1984
Species Pinnularia vixconspicua B.Chattová, D.Metzeltin & B.Van de Vijver, 2012
Species Pinnularia walkerae A.Cavalcante Pereira & L.Carvalho Torgan, 2014
Species Pinnularia wuyiensis Zhang, Pereira & Kociolek, 2016
Species Pinnularia xianhensis Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018
Species Pinnularia zebra Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018

Species Pinnularia abaujensis (Pantocsek) R.Ross, 1947 represented as Navicula gibba var. abaujensis Pantocsek, 1889
Species Pinnularia abbreviata (A.Cleve) A.Cleve, 1955 represented as Pinnularia biclavata var. abbreviata Cleve-Euler, 1922
Species Pinnularia alternans (J.Schumann) E.H.H.Pfitzer, 1871 represented as Navicula alternans var. alternans Schumann, 1867
Species Pinnularia amaniana (K.Krammer) M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 represented as Pinnularia appendiculata var. amaniana K.Krammer, 2000
Species Pinnularia americana (Hustedt in Schmidt et al.) Cholnoky, 1964 represented as Pinnularia gracilis var. americana Hustedt in Schmidt et al., 1934
Species Pinnularia amphiceros (Kützing) Rabenhorst, 1853 represented as Navicula amphiceros f. amphiceros Kützing, 1844
Species Pinnularia angusta (Cleve) Krammer, 1992 represented as Pinnularia mesolepta f. angusta (Cleve) Hustedt, 1930
  » Variety Pinnularia angusta var. rostrata K.Krammer, 2000 (uncertain, unassessed)
Species Pinnularia appendiculata (C.Agardh) Schaarschmidt, 1881 represented as Frustulia appendiculata C.Agardh, 1827
  » Forma Pinnularia appendiculata f. appendiculata (Agardh) Cleve, 1895 represented as Frustulia appendiculata C.Agardh, 1827
  » Forma Pinnularia appendiculata f. pumila (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia microstauron var. pumila Cleve-Euler, 1922
  » Variety Pinnularia appendiculata var. budensis Grunow represented as Navicula appendiculata var. budensis Grunow in Van Heurck, 1880
  » Variety Pinnularia appendiculata var. exilis (Grunow) F.W. Mills, 1934 represented as Navicula appendiculata var. exilis Grunow, 1860
  » Variety Pinnularia appendiculata var. irrorata (Grunow) F.W.Mills, 1934 represented as Navicula appendiculata var. irrorata Grunow, 1880
  » Variety Pinnularia appendiculata var. naveana (Grunow) Hustedt, 1914 represented as Navicula naveana f. naveana Grunow, 1863
  » Variety Pinnularia appendiculata var. naveana (Grunow) Otto Müller, 1898 represented as Navicula naveana f. naveana Grunow, 1863
  » Forma Pinnularia appendiculata f. constricta Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia appendiculata f. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia appendiculata f. intermedia Manguin, 1964 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. amaniana K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. bidens (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. brevistriata K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. densestriata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia appendiculata var. intermedia Hirano, 1964 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. irrorata Boye-Petersen, 1928 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. karelica Mölder, 1951 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. major Frenguelli, 1942 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. nipponica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. paeninsulaekoreana Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. robusta Foged, 1972 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. silesiaca Hustedt, 1914 (uncertain, unassessed)
  » Variety Pinnularia appendiculata var. tenuis Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia ardnamurchan (K.Krammer) M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 represented as Pinnularia divergentissima var. ardnamurchan K.Krammer, 2000
Species Pinnularia attwoodii (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 represented as Navicula attwoodii M. Peragallo in Tempère & Peragallo, 1908
Species Pinnularia bacillum (Ehrenberg) Ehrenberg, 1876 represented as Navicula bacillum f. bacillum Ehrenberg, 1838 (1839)
Species Pinnularia balatonis (Pantocsek) Gandhi, 196, v.57(1) represented as Navicula balatonis Pantocsek, 1902
Species Pinnularia baltica (Schulz) A.Cleve-Euler, 1955 represented as Pinnularia brebissonii var. baltica Schulz, 1926
Species Pinnularia bicapitata (N.G.W.Lagerstedt) L.Dippel, 1905 represented as Navicula bicapitata f. bicapitata Lagerstedt, 1873
Species Pinnularia bicunetata (Grunow) Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 represented as Navicula brebissonii Grunow in Van Heurck
Species Pinnularia bistriata (Leuduger-Fortmorel) Cleve, 1895 represented as Stauroneis bistriata Leuduger-Fortmorel, 1879
Species Pinnularia blotii (Heribaud in Heribaud et al.) F.W. Mills, 1934 represented as Navicula blotii Héribaud in Héribaud et al., 1920
Species Pinnularia caudata (C.S.Boyer) Patrick, 1966 represented as Pinnularia viridis var. caudata Boyer, 1916
Species Pinnularia cellesensis (Heribaud & M. Peragallo in Heribaud) F.W. Mills, 1934 represented as Navicula cellesensis Héribaud & M. Peragallo in Héribaud, 1902
Species Pinnularia cocconeis (Ehrenberg) Ehrenberg, 1854 represented as Navicula cocconeis Ehrenberg, 1842
Species Pinnularia congolensis (Zanon) Cholnoky, 1957 represented as Pinnularia borealis var. congolensis Zanon, 1938
Species Pinnularia conifera (Brun & Heribaud) Krammer, 2000 † represented as Navicula icostauron var. conifera Brun & Héribaud-Joseph, 1893 †
Species Pinnularia conspicua (A.Schmidt) Cleve, 1895 represented as Navicula conspicua A.W.F.Schmidt, 1876
Species Pinnularia contendens (Mann) VanLandingham, 1978 represented as Navicula contendens Mann, 1925
Species Pinnularia cruciata Cleve represented as Navicula cruciata Cleve, 1881
Species Pinnularia cymatopleura West & G.S.West represented as Navicula cymatopleura West & G.S.West, 1911
Species Pinnularia dalmatica (Grunow) Rabenhorst, 1864 represented as Navicula dalmatica var. dalmatica Grunow, 1860
Species Pinnularia danensis (Stiles) F.W. Mills, 1934 represented as Navicula danensis Stiles, 1918
Species Pinnularia decrescens (Grunow) K.Krammer, 2000 represented as Navicula legumen f. decrescens Grunow in Van Heurck, 1880
Species Pinnularia degenii (Pantocsek) F.W. Mills, 1934 represented as Navicula degenii Pantocsek, 1902
Species Pinnularia delicata Frenguelli, 1942 represented as Navicula delicata Frenguelli, 1926
Species Pinnularia delpiroui (M. Peragallo in Heribaud et al.) F.W. Mills, 1934 represented as Navicula delpiroui M. Peragallo in Héribaud et al., 1920
Species Pinnularia dispar (Schumann) Pfitzer, 1871 represented as Navicula dispar Schumann, 1862
Species Pinnularia eifelana (Krammer) Krammer, 2000 † represented as Pinnularia esoxiformis var. eifeliana Krammer, 1992
Species Pinnularia elegans (W.Smith) K.Krammer, 1992 represented as Navicula elegans f. elegans W. Smith, 1853
Species Pinnularia entomon Ehrenberg, 1843 represented as Navicula entomon var. entomon Ehrenberg, 1840
Species Pinnularia essexii (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 represented as Navicula essexii M. Peragallo in Tempère & Peragallo, 1913
Species Pinnularia farcimen (Østrup) F.W. Mills, 1934 represented as Navicula farcimen Østrup, 1904
Species Pinnularia flahaulti (Lauby) F.W. Mills, 1934 represented as Navicula flahaulti Lauby, 1910
Species Pinnularia flamma (Schmidt in Schmidt et al.) Cleve, 1895 represented as Navicula flamma Schmidt in Schmidt et al., 1876
Species Pinnularia flammula (Schmidt in Schmidt et al.) Cleve, 1895 represented as Navicula flammula Schmidt in Schmidt et al., 1876
Species Pinnularia floridana (Cleve) Cleve, 1895 represented as Navicula fluminensis var. floridana Cleve, 1895
Species Pinnularia formica Ehrenberg, 1854 represented as Navicula formica Ehrenberg, 1843 †
Species Pinnularia franconica (Krammer) Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 represented as Pinnularia rabenhorstii var. franconica K.Krammer, 2000
Species Pinnularia gebhardi (G.Krasske) F.Hustedt, 1962 represented as Navicula gebhardi Krasske, 1938
Species Pinnularia gemina (Ehrenberg) Ehrenberg, 1873 represented as Navicula gemina Ehrenberg, 1840
Species Pinnularia gibberula (Kützing) Rabenhorst, 1853 represented as Navicula gibberula var. gibberula Kützing, 1844
Species Pinnularia gomphonemacea (Ostrup in Heribaud et al.) F.W. Mills, 1934 represented as Navicula gomphonemacea Østrup in Héribaud et al., 1920
Species Pinnularia gregorii (Ralfs in Pritchard) Rabenhorst, 1864 represented as Navicula gregorii Ralfs ex Pritchard, 1861
Species Pinnularia groenlandica (Cleve) Cleve, 1895 represented as Navicula groenlandica Cleve, 1881
Species Pinnularia hemiptera (Kützing) Rabenhorst, 1853 represented as Navicula hemiptera var. hemiptera Kützing, 1844
  » Forma Pinnularia hemiptera f. angusta (Héribaud) F.W. Mills, 1934 represented as Navicula hemiptera var. angusta Héribaud, 1903
  » Forma Pinnularia hemiptera f. hemiptera (Kützing) Rabenhorst, 1853 represented as Navicula hemiptera var. hemiptera Kützing, 1844
  » Variety Pinnularia hemiptera var. gibba (Heribaud) F.W. Mills, 1934 represented as Navicula hemiptera var. gibba Héribaud, 1903
  » Forma Pinnularia hemiptera f. pumila Cleve-Euler, 1922 (uncertain, unassessed)
  » Variety Pinnularia hemiptera var. attenuata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia hemiptera var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia hemiptera var. groenlandica Foged, 1973 (uncertain, unassessed)
  » Variety Pinnularia hemiptera var. inconstans sensu Krasske, 1943 (uncertain, unassessed)
  » Variety Pinnularia hemiptera var. interrupta sensu Ostrup, 1910 (uncertain, unassessed)
  » Variety Pinnularia hemiptera var. valida Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia heroina (A.Schmidt) Metzeltin & Lange-Bertalot, 2007 represented as Navicula heroina A.W.F.Schmidt, 1876
Species Pinnularia heufleri (Grunow) Rabenhorst, 1864 represented as Navicula heufleri Grunow, 1860
Species Pinnularia huei (Heribaud) F.W. Mills, 1934 represented as Navicula huei var. huei Héribaud, 1903
Species Pinnularia hyperborea Ehrenberg, 1872 represented as Navicula hyperborea Grunow, 1860
Species Pinnularia hyrtlii (Pantocsek) Cleve-Euler, 1948 represented as Navicula hyrtlii f. hyrtlii Pantocsek, 1892
Species Pinnularia ignobilis (Krasske) A.Cleve, 1955 represented as Navicula ignobilis Krasske, 1938
Species Pinnularia inaequalis (Ehrenberg) Ehrenberg, 1854 represented as Navicula inaequalis Ehrenberg, 1836 †
  » Variety Pinnularia inaequalis var. ampla Ehrenberg, 1854 (uncertain, unassessed)
  » Variety Pinnularia inaequalis var. angusta Ehrenberg, 1854 (uncertain, unassessed)
Species Pinnularia inflata (Kützing) Rabenhorst, 1853 represented as Frustulia inflata Kützing, 1833 (1834)
Species Pinnularia instabilis (A.Schmidt) D.Metzeltin, 1998 represented as Navicula instabilis f. instabilis Schmidt in Schmidt et al., 1876
Species Pinnularia iridis (Ehrenberg) Rabenhorst, 1853 represented as Navicula iridis f. iridis Ehrenberg, 1843
Species Pinnularia irrorata (Grunow) Hustedt, 1942 represented as Pinnularia appendiculata var. irrorata Boye-Petersen, 1928
Species Pinnularia joculata (Manguin) K.Krammer, 2000 represented as Pinnularia interrupta var. joculata Manguin, 1952
Species Pinnularia karelica Cleve, 1891 represented as Pinnularia proschkinae-lavrenkoi (Skvortzov, 2012)
  » Variety Pinnularia karelica var. tibetana (Hustedt) Cleve-Euler, 1939 represented as Pinnularia tibetana var. tibetana Hustedt, 1922
  » Forma Pinnularia karelica f. japonica Hustedt, 1927 (uncertain, unassessed)
  » Forma Pinnularia karelica f. obtusa Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia karelica var. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Pinnularia karelica var. capitata Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia karelica var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia karelica var. insularis Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia karelica var. intermedia Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia karelica var. karelica Cleve, 1891 (uncertain, unassessed)
  » Variety Pinnularia karelica var. rostrata Østrup, 1918 (1920) (uncertain, unassessed)
  » Variety Pinnularia karelica var. stauroneiformis Hustedt in A. Schmidt, 1914 (uncertain, unassessed)
  » Variety Pinnularia karelica var. subcapitata Skvortzow, 1938 (uncertain, unassessed)
Species Pinnularia karstenii (Pantocsek) F.W. Mills, 1934 represented as Navicula karstenii Pantocsek, 1902
Species Pinnularia kefvingensis Ehrenberg, 1840 represented as Navicula kefvingensis (Ehrenberg) Kützing, 1844
Species Pinnularia kriegeriana Krasske, 1943 represented as Pulchellophycus kriegerianus (Krasske) Edlund & M.J.Wynne, 2019 (unassessed)
Species Pinnularia krockii (Grunow) Hustedt, 1942 represented as Navicula krockii Grunow, 1882
Species Pinnularia lagerstedti (Cleve) Hustedt, 1934 represented as Pinnularia parva f. lagerstedtii Cleve, 1895
Species Pinnularia latiuscula (Kützing) Rabenhorst, 1853 represented as Navicula latiuscula var. latiuscula Kützing, 1844
Species Pinnularia leveillei (Heribaud) F.W. Mills, 1934 represented as Navicula leveillei Héribaud, 1903
Species Pinnularia limosa (Kützing) Rabenhorst, 1853 represented as Navicula limosa f. limosa Kützing, 1844
Species Pinnularia lobata (Grove & Sturt) Cleve, 1895 represented as Navicula lobata Grove & Sturt, 1887
Species Pinnularia loczyi (Pantocsek) F.W. Mills, 1934 represented as Navicula loczyi Pantocsek, 1889
Species Pinnularia longicornis (Ehrenberg) M.Peragallo, 1903 represented as Eunotia longicornis Ehrenberg, 1849
Species Pinnularia luculenta (A.W.F.Schmidt) Cleve, 1895 represented as Navicula luculenta A.W.F.Schmidt, 1876
Species Pinnularia madagascarensis (Fritsch) F.W. Mills, 1934 represented as Navicula madagascarensis Fritsch, 1914
Species Pinnularia magocsyi (Pantocsek) Cleve-Euler, 1934 represented as Navicula magocsyi var. magocsyi Pantocsek, 1902
Species Pinnularia martyi (Lauby) F.W. Mills, 1934 represented as Navicula martyi Lauby, 1910
Species Pinnularia media (Krammer) Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 represented as Pinnularia divergens var. media Krammer, 2000
Species Pinnularia mediocris (Krasske) F.W.Mills, 1935 represented as Navicula mediocris var. mediocris Krasske, 1932
Species Pinnularia minuta (Østrup) Cleve-Euler, 1955 represented as Pinnularia parva var. minuta Østrup, 1918
Species Pinnularia modesta (Grunow) Cleve, 1895 represented as Navicula modesta Grunow, 1882
Species Pinnularia monile (Ehrenberg) Ehrenberg, 1854 represented as Navicula monile Ehrenberg, 1840
Species Pinnularia mormonorum (Grunow ex A.Schmidt) Boyer, 1916 represented as Navicula mormonorum Grunow ex A.Schmidt, 1876
Species Pinnularia multicostata (Grunow) Rabenhorst, 1864 represented as Navicula multicostata var. multicostata Grunow, 1860
Species Pinnularia murrayi (W. & G. S. West) F.W. Mills, 1934 represented as Navicula murrayi var. murrayi W. & G.S. West, 1911
Species Pinnularia naveana (Grunow) Rabenhorst, 1864 represented as Navicula naveana f. naveana Grunow, 1863
Species Pinnularia norwegica (Ehrenberg) Ehrenberg, 1845 represented as Navicula norvegica (Ehrenberg) Kützing, 1844
Species Pinnularia notata (M.Peragallo & Heribaud) F.W.Mills, 1934 represented as Navicula notata var. notata M. Peragallo & Héribaud in Héribaud, 1893
Species Pinnularia oblonga (Kützing) W.Smith, 1853 † represented as Frustulia oblonga Kützing, 1833 †
  » Forma Pinnularia oblonga f. acuminata Gutwinski, 1890 (uncertain, unassessed)
  » Forma Pinnularia oblonga f. genuina Gutwinski, 1890 (uncertain, unassessed)
  » Forma Pinnularia oblonga f. oblonga Rabenhorst, 1853 (uncertain, unassessed)
Species Pinnularia oestrupii (Heribaud in Heribaud et al.) F.W. Mills, 1934 represented as Navicula oestrupii Héribaud in Héribaud et al., 1920
  » Variety Pinnularia oestrupii var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia oestrupii var. oestrupii Cleve-Euler, 1934 (uncertain, unassessed)
Species Pinnularia olivieri (Heribaud) F.W. Mills, 1934 represented as Navicula olivieri Héribaud, 1903
Species Pinnularia osoresanensis (Negoro) H. Fukushima, S. Yoshitake & T. Ko-Bayashi, 2002 represented as Pinnularia acoricola var. osoresanensis Negoro, 1944
Species Pinnularia pandura (Brébisson) Gregory, 1856 represented as Navicula pandura var. pandura Brébisson, 1854
Species Pinnularia parva (Ehrenberg) Schaarschmidt, 1881 represented as Stauroptera parva Ehrenberg, 1843
Species Pinnularia perlucens (E.V.Østrup) H.H.Gran represented as Navicula perlucens Østrup, 1895
Species Pinnularia pontifica (Mann) VanLandingham, 1975 represented as Navicula pontifica Mann, 1925
Species Pinnularia problematica (Østrup) F.W.Mills, 1934 represented as Navicula problematica Østrup, 1908
Species Pinnularia protracta (Grunow) Mayer, 1913 represented as Navicula crucicula var. protracta Grunow, 1880 (alternate representation)
Species Pinnularia pulchella (Boyer) K.Krammer, 2000 † represented as Pinnularia major var. pulchella Boyer, 1916 † (alternate representation)
  » Variety Pinnularia pulchella var. canadensis K.Krammer, 2000 (uncertain, unassessed)
Species Pinnularia quadrifasciata (Ehrenberg) Ehrenberg, 1854 represented as Navicula quadrifasciata Ehrenberg, 1840 (alternate representation)
Species Pinnularia rabenhorstiana (Hilse in Rabenhorst; Hilse) M. Peragallo, 1903 represented as Navicula rabenhorstiana Hilse in Rabenhorst, 1859 (alternate representation)
Species Pinnularia rabenhorstii (Grunow) K.Krammer, 2000 represented as Navicula rabenhorstii var. rabenhorstii Grunow, 1860 (alternate representation)
Species Pinnularia rectangulata (Gregory) Rabenhorst, 1864 represented as Navicula rectangulata Gregory, 1857 (alternate representation)
Species Pinnularia retusa (Brébisson) Mills & Philip, 1901 represented as Navicula retusa var. retusa Brébisson, 1854 (alternate representation)
Species Pinnularia reversa (Mann) VanLandingham, 1975 represented as Navicula reversa Mann, 1925 (alternate representation)
Species Pinnularia rhombundulata (K.Krammer) M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 represented as Pinnularia divergens var. rhombundulata K.Krammer, 2000 (alternate representation)
Species Pinnularia rostellata (Kützing) Rabenhorst, 1853 represented as Navicula rostellata f. rostellata Kützing, 1844 (alternate representation)
Species Pinnularia salina (K.Krammer) M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 represented as Pinnularia stomatophora var. salina Krammer, 2000 (alternate representation)
Species Pinnularia schroederi (Hustedt) B.J.Cholnoky, 1959 represented as Caloneis schroederi Hustedt, 1922 (alternate representation)
Species Pinnularia schwabei Krasske, 1939 represented as Pulchellophycus schwabei (Krasske) Edlund & M.J.Wynne, 2019 (alternate representation, unassessed)
Species Pinnularia schweinfurthi (Schmidt) Hustedt, 1934 represented as Navicula schweinfurthi A.W.F.Schmidt, 1876 (alternate representation)
Species Pinnularia schweinfurthii (A.Schmidt) R.M.Patrick, 1966 represented as Navicula schweinfurthi A.W.F.Schmidt, 1876 (alternate representation)
Species Pinnularia scythica (Pantocsek) H.P.Gandhi represented as Navicula scythica Pantocsek, 1892 (alternate representation)
Species Pinnularia secernenda (A.Schmidt) Cleve, 1895 represented as Navicula secernenda A.W.F.Schmidt, 1876 (alternate representation)
Species Pinnularia sendaiensis (Hustedt ex Simonsen) D. Metzeltin & H. Lange-Bertalot, 2007 represented as Pinnularia major var. sendaiensis Hustedt ex Simonsen, 1987 (alternate representation)
Species Pinnularia socialis (T.C.Palmer) Hustedt, 1913 represented as Navicula socialis T.C.Palmer, 1910 (alternate representation)
Species Pinnularia spathulata (Frenguelli) Cleve-Euler, 1948 represented as Navicula latevittata var. spathulata Frenguelli, 1924 (alternate representation)
Species Pinnularia subcohaerens (Thwaites) Brun, 1880 represented as Schizonema subcohaerens Thwaites, 1848 (alternate representation)
Species Pinnularia sublanceolata (J.B.Petersen) A.Cleve, 1955 represented as Pinnularia subcapitata var. sublanceolata Petersen, 1928 (alternate representation)
Species Pinnularia sublinearis (Grunow) Schaarschmidt, 1881 represented as Navicula sublinearis Grunow, 1885 (alternate representation)
Species Pinnularia suecica (Ehrenberg) Ehrenberg, 1854 represented as Navicula suecica Ehrenberg, 1838 (alternate representation)
Species Pinnularia temperei (Brun) Cleve in A. Schmidt, 1892 represented as Navicula temperei Brun in Brun & Tempère, 1889 (alternate representation)
Species Pinnularia termitina (Ehrenberg) R.M.Patrick, 1966 represented as Navicula termitina Ehrenberg, 1854 (alternate representation)
Species Pinnularia thorax (Brun) Cleve, 1895 represented as Navicula thorax Brun, 1891 (alternate representation)
Species Pinnularia tirolensis (Metzeltin & Krammer) K.Krammer, 2000 represented as Pinnularia subgibba var. tirolensis Metzeltin & Krammer, 1996, v.2 (alternate representation)
  » Variety Pinnularia tirolensis var. julma Krammer, 2000 (uncertain, unassessed)
Species Pinnularia tumidula (K.Krammer) M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 represented as Pinnularia acrosphaeria var. tumidula K.Krammer, 2000 (alternate representation)
Species Pinnularia turbulenta (Cleve-Euler) Krammer, 2000 represented as Pinnularia mesolepta var. turbulenta Cleve-Euler, 1955 (alternate representation)
Species Pinnularia turgidula (Krammer) Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 represented as Pinnularia acrosphaeria f. turgidula Grunow ex Cleve, 1895 (alternate representation)
Species Pinnularia undula (Schumann) K.Krammer, 2000 † represented as Navicula undula Schumann, 1862 † (alternate representation)
Species Pinnularia viridula (Ehrenberg) Ehrenberg, 1843 represented as Frustulia viridula Kützing, 1833 (alternate representation)
Species Pinnularia woerthensis (A.Mayer) K.Krammer, 1992 represented as Pinnularia major var. woerthensis A.Mayer, 1931 (alternate representation)
Species Pinnularia zanardiniana (Grunow) Rabenhorst, 1864 represented as Navicula zanardiniana Grunow, 1860 (alternate representation)
Species Pinnularia zostereti (Grunow) Rabenhorst, 1864 represented as Navicula zostereti f. zostereti Grunow, 1860 (alternate representation)

Species Pinnularia ambigua Cleve, 1895 accepted as Biremis ambigua (Cleve) D.G.Mann, 1990 (unaccepted, synonym)
Species Pinnularia balfouriana Grunow ex Cleve, 1895 accepted as (unaccepted, synonym)
  » Variety Pinnularia balfouriana var. balfouriana Grunow ex Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia balfouriana var. brevicostata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia balfouriana var. permiana Zanon, 1930 (uncertain, unassessed)
  » Variety Pinnularia balfouriana var. stauroptera Skvortzow, 1936 (uncertain, unassessed)
Species Pinnularia bavarica A.Mayer, 1913 † accepted as  † (unaccepted, synonym)
  » Forma Pinnularia bavarica f. bavarica Mayer, 1913 (uncertain, unassessed)
  » Forma Pinnularia bavarica f. continua Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Pinnularia bavarica f. genuina Mayer, 1916 (1917) (uncertain, unassessed)
Species Pinnularia braunii (Grunow) Cleve, 1895 accepted as Pinnularia brauniana (Grunow) Studnicka, 1888 (unaccepted, synonym)
  » Forma Pinnularia braunii f. amphicephala (Mayer) Hustedt, 1930 represented as Pinnularia amphicephala A.Mayer, 1917
  » Forma Pinnularia braunii f. braunii (Grunow in Van Heurck) Cleve, 1895 represented as Navicula braunii var. braunii Grunow in Van Heurck, 1880
  » Variety Pinnularia braunii var. moissacensis (Heribaud) Mills, 1934 represented as Navicula braunii var. moissacensis Héribaud-Joseph, 1903
  » Forma Pinnularia braunii f. minor Hustedt, 1910 (uncertain, unassessed)
  » Forma Pinnularia braunii f. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Forma Pinnularia braunii f. subconica Venkataraman, 1939 (uncertain, unassessed)
  » Variety Pinnularia braunii var. amphipalor Stoermer & Kreis, 1978 (uncertain, unassessed)
  » Variety Pinnularia braunii var. angustata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia braunii var. curta Skvortzov, 2012 (uncertain)
  » Variety Pinnularia braunii var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia braunii var. marginata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia braunii var. minor (Hustedt) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia braunii var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia braunii var. oboesa Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia braunii var. scabrosa A.P.Skabichevskij, 1936 (uncertain, unassessed)
  » Variety Pinnularia braunii var. undulata Negoro, 1944 (uncertain, unassessed)
Species Pinnularia brebissonii (Kützing) Rabenhorst, 1864 accepted as Pinnularia acutobrebissonii Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 (unaccepted)
  » Forma Pinnularia brebissonii f. attenuata (M. Peragallo in Heribaud et al.) F.W. Mills, 1934 represented as Navicula brebissonii var. attenuata M. Peragallo in Héribaud et al., 1920
  » Forma Pinnularia brebissonii f. biundulata (Otto Müller) Cleve-Euler, 1955 represented as Pinnularia microstauron f. biundulata (O.Müller) Hustedt, 1930
  » Forma Pinnularia brebissonii f. brebissonii (Kützing) Rabenhorst, 1864 represented as Navicula brebissonii f. brebissonii Kützing, 1844
  » Forma Pinnularia brebissonii f. mormonorum (Grunow in Schmidt et al.) Cleve-Euler, 1955 represented as Navicula mormonorum Grunow ex A.Schmidt, 1876
  » Forma Pinnularia brebissonii f. ovalis (H. Peragallo in Heribaud) F.W. Mills, 1934 represented as Navicula brebissonii var. ovalis H. Peragallo in Heribaud, 1893
  » Forma Pinnularia brebissonii f. subproducta (Grunow in Van Heurck) Cleve-Euler, 1932 represented as Navicula brebissonii var. subproducta Grunow in Van Heurck, 1880
  » Forma Pinnularia brebissonii f. truncata (Cleve-Euler) Cleve-Euler, 1932 represented as Pinnularia divergens var. truncata Cleve-Euler, 1915
  » Variety Pinnularia brebissonii var. angusta (Grunow) Rabenhorst, 1864 represented as Navicula brebissonii var. angusta Grunow, 1860
  » Variety Pinnularia brebissonii var. cruciformis (Donkin) Rabenhorst, 1864 represented as Navicula cruciformis var. cruciformis Donkin, 1861
  » Variety Pinnularia brebissonii var. degenii (Pantocsek) Cleve-Euler, 1955 represented as Navicula degenii Pantocsek, 1902
  » Variety Pinnularia brebissonii var. elongata (Brun & Heribaud in Heribaud) F.W. Mills, 1934 represented as Navicula brebissonii var. elongata Brun & Héribaud in Héribaud, 1893
  » Variety Pinnularia brebissonii var. fossilis (Pantocsek; Pantocsek) F.W. Mills, 1934 represented as Navicula brebissonii var. fossilis Pantocsek, 1892
  » Variety Pinnularia brebissonii var. hybrida (Grunow) Cleve-Euler, 1932 represented as Navicula bicapitata var. hybrida Grunow, 1880
  » Variety Pinnularia brebissonii var. intermedia (M. Peragallo in Heribaud et al.) F.W. Mills, 1934 represented as Navicula brebissonii var. intermedia M. Peragallo in Héribaud et al., 1920
  » Variety Pinnularia brebissonii var. laticeps (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia divergens var. laticeps Cleve-Euler, 1932
  » Variety Pinnularia brebissonii var. mormonorum (Grunow in Schmidt et al.) F.W. Mills, 1934 represented as Navicula mormonorum Grunow ex A.Schmidt, 1876
  » Variety Pinnularia brebissonii var. notata (M.Peragallo & Héribaud-Joseph) Cleve, 1895 represented as Navicula notata var. notata M. Peragallo & Héribaud in Héribaud, 1893
  » Variety Pinnularia brebissonii var. subconstricta (Pantocsek) Østrup, 1910 represented as Navicula brebissonii var. subconstricta Pantocsek, 1902
  » Forma Pinnularia brebissonii f. continua Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. curta Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. curta Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. linearis Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. minutissima Petersen, 1915 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. ornata Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. parva Heiden & Kolbe, 1928 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. producta Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. subconstricta (Pantocsek) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. subcontinua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia brebissonii f. undulata Hofmann, 1914 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. acuta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. baltica Schulz, 1926 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. borealis Otto Müller (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. curta (Otto Müller) Meister, 1912 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. diminuta sensu Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. elliptica Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. genuina Otto Müller, 1898 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. hybrida sensu Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. incisa Schaarschmidt, 1881 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. kenaiensis McLaughlin in McLaughlin & Stone, 1986 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. lancarea K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. lanceolata Østrup, 1910 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. linearis sensu Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. lucida (Lauby) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. minuta K.Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. notata sensu Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. notata sensu Berg, 1945 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. ornata (Otto Müller) Schonfeldt, 1913 (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. producta Grunow (uncertain, unassessed)
  » Variety Pinnularia brebissonii var. subcapitata Rabenhorst, 1864 (uncertain, unassessed)
Species Pinnularia britannica (Van Heurck) Cleve-Euler, 1955 accepted as (unaccepted, synonym)
Species Pinnularia commutata (Grunow ex A.Schmidt) Dippel, 1905 accepted as Navicula commutata Grunow ex A.Schmidt, 1876 (unaccepted)
Species Pinnularia curta A.Cleve accepted as Achnanthes curta (A.Cleve) A.Berg ex Cleve-Euler, 1953 (unaccepted, synonym)
  » Variety Pinnularia curta var. curta A. Cleve, 1900 (uncertain, unassessed)
  » Variety Pinnularia curta var. elongata A. Cleve, 1900 (uncertain, unassessed)
Species Pinnularia dariana (Schmidt) F.W.Mills, 1934 accepted as (unaccepted)
Species Pinnularia digitoradiata Gregory, 1856 accepted as Navicula digitoradiata (Gregory) Ralfs, 1861 (unaccepted, basionym)
Species Pinnularia directa W.Smith, 1853 accepted as Navicula directa (W.Smith) Ralfs, 1861 (unaccepted, basionym)
  » Variety Pinnularia directa var. subtilis (Gregory) F.W. Mills, 1934 represented as Pinnularia subtilis Gregory, 1857
  » Variety Pinnularia directa var. angusta Axentijev, 1926 (uncertain, unassessed)
  » Variety Pinnularia directa var. directa Plutenko, 1872 (uncertain, unassessed)
  » Variety Pinnularia directa var. directa W. Smith, 1853 (uncertain, unassessed)
Species Pinnularia elliptica Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018 accepted as Pinnularia palidis Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018 (unaccepted, Illegitimate name.)
Species Pinnularia fasciata (Lagerstedt) Hustedt, 1930 accepted as Caloneis bacillum (Grunow) Cleve, 1894 (unaccepted, synonym)
Species Pinnularia fritschii Salah, 1953 accepted as Biremis fritschii (Salah) D.G.Mann, 1990 (unaccepted, synonym)
  » Variety Pinnularia fritschii var. fritschii Salah, 1953 (uncertain, unassessed)
  » Variety Pinnularia fritschii var. lata Salah, 1953 (uncertain, unassessed)
Species Pinnularia inaequalis Ehrenberg, 1854 accepted as Cymbopleura inaequalis (Ehrenberg) Krammer, 2003 † (unaccepted)
  » Variety Pinnularia inaequalis var. inaequalis Ehrenberg, 1843 (uncertain, unassessed)
Species Pinnularia interrupta W.Smith, 1853 accepted as Pinnularia biceps W.Gregory, 1856 (unaccepted, synonym)
  » Forma Pinnularia interrupta f. minutissima Manguin, 1939
  » Forma Pinnularia interrupta f. bicapitata (Lagerstedt) F.W.Mills, 1934 represented as Navicula bicapitata f. bicapitata Lagerstedt, 1873
  » Forma Pinnularia interrupta f. biceps (W.Gregory) Cleve, 1895 represented as Pinnularia biceps f. biceps Gregory, 1856
  » Forma Pinnularia interrupta f. braunii (Grunow) Mills, 1934 represented as Navicula braunii var. braunii Grunow in Van Heurck, 1880
  » Forma Pinnularia interrupta f. minutissima (Hustedt) Hustedt, 1930 represented as Pinnularia interrupta var. minutissima F.Hustedt, 1924
  » Forma Pinnularia interrupta f. stauroneiformis (Schmidt) O.Müller, 1898 represented as Navicula termes var. stauroneiformis A.W.F.Schmidt, 1876
  » Forma Pinnularia interrupta f. termitina (Ehrenberg) Otto Müller, 1898 represented as Navicula termitina Ehrenberg, 1854
  » Variety Pinnularia interrupta var. biceps (W.Gregory) F.Meister, 1912 represented as Pinnularia biceps f. biceps Gregory, 1856
  » Variety Pinnularia interrupta var. clancula (Schmidt in Schmidt et al.) Fricke, 1902 represented as Navicula clancula A.Schmidt, 1875
  » Variety Pinnularia interrupta var. crassior (Grunow) Cleve, 1895 represented as Navicula globiceps var. crassior Grunow, 1880
  » Variety Pinnularia interrupta var. stauroneiformis (van Heurck) Meister, 1912 represented as Navicula termes var. stauroneiformis A.W.F.Schmidt, 1876
  » Forma Pinnularia interrupta f. angusta Chernov, 1939 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. constricta Allorge & Manguin, 1941 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. genuina (Fritsch) F.W. Mills, 1934 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. interrupta W. Smith, 1853 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. major Vaulina, 1956 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. mesolepta Guermeur, 1954 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. minor J.B.Petersen, 1928 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. minor Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. ornata Gallik, 1930 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. schmidtii Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. stauroneiformis Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. subcapitata (Gregory) F.W. Mills, 1934 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. subundulata (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. termitina Otto Müller, 1898 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia interrupta f. westii (Fritsch) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. amphirhynchus Cleve-Euler, 1915 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. beta W. Smith, 1856 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. constricta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. cuneata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. diminuta Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. gibberula Hustedt, 1950 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. Gibberula F. W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. hybrida Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. intermedia Robert, 1962 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. isostauron Anisimova, 1951 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. joculata Manguin, 1952 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. koreana Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. mesolepta Krasske, 1957 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. minor Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. minutissima F.Hustedt, 1924 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. neogenica Zanon, 1933 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. pseudomesolepta (Fritsch & Rich) F.W. Mills, 1934 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. rostrata Mayer, 1933 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. sinica Skvortzov, 1935 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. tricostata Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia interrupta var. tungtingiana Skvortzov, 2012 (uncertain)
Species Pinnularia johnsonii W.Smith, 1853 accepted as Navicula scopulorum de Brébisson ex Kützing, 1849 (unaccepted, synonym)
  » Variety Pinnularia johnsonii var. beta W. Smith, 1853 (uncertain, unassessed)
  » Variety Pinnularia johnsonii var. johnsonii W. Smith, 1853 (uncertain, unassessed)
  » Variety Pinnularia johnsonii var. parva Rabenhorst, 1864 (uncertain, unassessed)
Species Pinnularia latevittata Cleve, 1894 † accepted as Schizonema domingense Kuntze, 1898 (unaccepted, synonym)
  » Variety Pinnularia latevittata var. minor Hagelstein ex Kociolek, 2003
  » Forma Pinnularia latevittata f. medioconstricta (Fontell) Cleve-Euler, 1955 represented as Pinnularia dactylus var. medioconstricta Fontell, 1917
  » Variety Pinnularia latevittata var. spathulata (Frenguelli) Frenguelli, 1933 represented as Navicula latevittata var. spathulata Frenguelli, 1924
  » Forma Pinnularia latevittata f. latevittata Cleve, 1894 (uncertain, unassessed)
  » Forma Pinnularia latevittata f. medioinflata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia latevittata f. minor Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia latevittata f. typica Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia latevittata var. domingensis Cleve, 1894 (uncertain, unassessed)
Species Pinnularia latistriata Gregory, 1854 accepted as Pinnularia lata var. latestriata (Gregory) Cleve, 1895 (unaccepted, synonym)
  » Variety Pinnularia latistriata var. beta Gregory, 1854 (uncertain, unassessed)
  » Variety Pinnularia latistriata var. latistriata Gregory, 1854 (uncertain, unassessed)
  » Variety Pinnularia latistriata var. semicruciata Meister, 1924 (uncertain, unassessed)
Species Pinnularia leptosoma (Grunow) Cleve, 1895 accepted as Caloneis leptosoma (Grunow) Krammer, 1985 (unaccepted, synonym)
  » Forma Pinnularia leptosoma f. leptosoma (Grunow in Van Heurck) Cleve, 1895 represented as Navicula leptosoma Grunow, 1880
  » Forma Pinnularia leptosoma f. subinflata (Mayer) Cleve-Euler, 1955 represented as Pinnularia leptosoma var. subinflata Mayer, 1940
  » Forma Pinnularia leptosoma f. elangensis Mayer, 1940 (uncertain, unassessed)
  » Forma Pinnularia leptosoma f. grunowii Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia leptosoma f. robusta Shirshov, 1935 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. arctica Patrick & Freese, 1961 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. gracilis Hustedt, 1937 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. gracilis Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. robusta Cleve-Euler, 1922 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. subinflata Mayer, 1940 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. typica Ross, 1947 (uncertain, unassessed)
  » Variety Pinnularia leptosoma var. undulata Østrup, 1918 (1920) (uncertain, unassessed)
Species Pinnularia ludloviana (Schmidt) Pantocsek, 1913 † accepted as Navicula ludloviana Schmidt, 1876 † (unaccepted, synonym)
Species Pinnularia molaris (Grunow) Cleve, 1895 accepted as Caloneis molaris (Grunow) Krammer, 1985 (unaccepted)
  » Forma Pinnularia molaris f. molaris (Grunow) Cleve, 1895 represented as Navicula molaris var. molaris Grunow, 1863
  » Variety Pinnularia molaris var. abyssinica (Grunow) F.W. Mills, 1934 represented as Navicula molaris var. abyssinica Grunow, 1886
  » Forma Pinnularia molaris f. lapponica Pociene, 1960 (uncertain, unassessed)
  » Variety Pinnularia molaris var. asiatica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia molaris var. baikalensis Skvortzov, 2012 (uncertain)
  » Variety Pinnularia molaris var. brevis Zanon, 1941 (uncertain, unassessed)
  » Variety Pinnularia molaris var. brevistriata Huang, 1979 (uncertain, unassessed)
  » Variety Pinnularia molaris var. constricta Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia molaris var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia molaris var. lapponica Mölder, 1937 (uncertain, unassessed)
  » Variety Pinnularia molaris var. producta Gallik, 1930 (uncertain, unassessed)
  » Variety Pinnularia molaris var. producta Weinhold, 1957 (uncertain, unassessed)
  » Variety Pinnularia molaris var. semicruciata Mayer, 1916 (1917) (uncertain, unassessed)
Species Pinnularia oblonga G.L.Rabenhorst, 1853 accepted as Navicula oblonga (Kützing) Kützing, 1844 † (unaccepted, synonym)
Species Pinnularia parallela Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018 accepted as Pinnularia shii Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018 (unaccepted, Illegitimate name.)
Species Pinnularia peregrina Ehrenberg, 1843 accepted as Navicula peregrina (Ehrenberg) Kützing, 1844 (unaccepted, basionym)
  » Variety Pinnularia peregrina var. menisculus (uncertain, unassessed)
  » Variety Pinnularia peregrina var. peregrina Ehrenberg, 1843 (uncertain, unassessed)
Species Pinnularia placentula Ehrenberg, 1843 accepted as Placoneis placentula (Ehrenberg) Mereschkowsky, 1903 (unaccepted, Basionym)
  » Variety Pinnularia placentula var. obtusa Jousé, 1939 (uncertain, unassessed)
  » Variety Pinnularia placentula var. placentula Ehrenberg, 1843 (uncertain, unassessed)
Species Pinnularia polyonca (Brébisson) W.Smith, 1856 (unaccepted)
  » Variety Pinnularia polyonca var. similis (Krammer) Krammer, 2000 represented as Pinnularia mayeri var. similis K.Krammer, 1992
  » Variety Pinnularia polyonca var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia polyonca var. major Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia polyonca var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia polyonca var. scabrosa Skabichevskii, 1936 (uncertain, unassessed)
  » Variety Pinnularia polyonca var. stidolphii Krammer, 2000 (uncertain, unassessed)
  » Variety Pinnularia polyonca var. sublinearis Skvortzov, 1976 (uncertain, unassessed)
  » Variety Pinnularia polyonca var. sumatrana Krammer, 2000 (uncertain, unassessed)
Species Pinnularia pseudogracillima (Mayer) Mayer, 1917 accepted as Pinnularia nodosa var. pseudogracillima Ant.Mayer, 1913 (unaccepted, synonym)
Species Pinnularia rangoonensis Grunow ex Cleve, 1895 accepted as Pinnularia abaujensis var. linearis (Hustedt) R.M.Patrick, 1966 (unaccepted)
  » Variety Pinnularia rangoonensis var. foerarmensis Cleve-Euler, 1915 (uncertain, unassessed)
  » Variety Pinnularia rangoonensis var. genuina Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia rangoonensis var. rangoonensis Grunow ex Cleve, 1895 (uncertain, unassessed)
Species Pinnularia rupestris (Skvortzow) Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018 accepted as Pinnularia montium Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018 (unaccepted, Illegitimate name.)
Species Pinnularia soehrensis (G.Krasske) J.B.Petersen, 1932 accepted as Chamaepinnularia soehrensis (Krasske) Lange-Bertalot & Krammer, 1996 (unaccepted)
  » Forma Pinnularia soehrensis f. linearis (Krasske) Petersen, 1932 represented as Navicula soehrensis var. linearis Krasske, 1929
  » Forma Pinnularia soehrensis f. muscicola (Petersen) Petersen, 1932 represented as Pinnularia muscicola J.B.Petersen, 1928
  » Forma Pinnularia soehrensis f. septentrionalis (Hustedt) Cleve-Euler, 1955 represented as Navicula soehrensis var. septentrionalis Hustedt, 1924
  » Forma Pinnularia soehrensis f. soehrensis (Krasske) Petersen, 1932 represented as Navicula soehrensis f. soehrensis Krasske, 1923
  » Variety Pinnularia soehrensis var. capitata (Krasske) Petersen, 1932 represented as Navicula soehrensis var. capitata Krasske, 1925
  » Forma Pinnularia soehrensis f. constricta (Krasske) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia soehrensis f. constricta (Krasske) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia soehrensis f. fasciata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia soehrensis f. interrupta Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia soehrensis f. interrupta (Cleve-Euler) (uncertain, unassessed)
  » Variety Pinnularia soehrensis var. biconstricta Berg in Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia soehrensis var. densestriata Berg in Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia soehrensis var. inflata (Krasske) Petersen, 1932 (uncertain, unassessed)
  » Variety Pinnularia soehrensis var. intermedia Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia soehrensis var. typica Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia söhrensis (Krasske) J.B.Petersen, 1932 accepted as Navicula söhrensis Krasske (unaccepted, synonym)
  » Forma Pinnularia söhrensis f. typica J.B. Petersen, 1932 (uncertain, unassessed)
Species Pinnularia stauroptera (Grunow) Rabenhorst, 1864 accepted as Pinnularia gibba Ehrenberg, 1843 (unaccepted, Synonym)
  » Forma Pinnularia stauroptera f. interrupta (Cleve) Mayer, 1917
  » Forma Pinnularia stauroptera f. semicruciata (Cleve) Otto Müller, 1898 represented as Pinnularia stauroptera var. semicruciata Cleve, 1895
  » Forma Pinnularia stauroptera f. semicruciata (Cleve) J.Frenguelli, 1933 represented as Pinnularia stauroptera var. semicruciata Cleve, 1895
  » Variety Pinnularia stauroptera var. doeringi (Frenguelli) Cleve-Euler, 1948 represented as Navicula doeringii var. doeringii Frenguelli, 1923
  » Variety Pinnularia stauroptera var. interrupta (W.Smith) Brun, 1880 represented as Pinnularia interrupta f. interrupta W. Smith, 1853
  » Variety Pinnularia stauroptera var. subundulata (Østrup) Cleve-Euler, 1955 represented as Pinnularia subundulata E.V.Østrup, 1918
  » Forma Pinnularia stauroptera f. recta Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Forma Pinnularia stauroptera f. subcapitata Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. brevicostata Frenguelli, 1933 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. linearis Østrup, 1910 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. mesogongyla (Ehrenberg) Hustedt, 1914 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. mingiana Skvortzov, 2012 (uncertain)
  » Variety Pinnularia stauroptera var. recta Skvortzow, 1929 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. rostrata Skvortzov, 2012 (uncertain)
  » Variety Pinnularia stauroptera var. semicruciata Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. subacuta Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. subundulata Mayer, 1913 (uncertain, unassessed)
  » Variety Pinnularia stauroptera var. tabellarioides Mayer, 1913 (uncertain, unassessed)
Species Pinnularia stomatophoroides A.Mayer, 1939 accepted as (unaccepted, synonym)
Species Pinnularia submicrostauron Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018 accepted as Pinnularia aquaedulcis Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018 (unaccepted, Illegitimate name.)
Species Pinnularia subsinistra Y.Liu, Kociolek & Q.X.Wang in Y.Liu et al., 2018 accepted as Pinnularia paliobducta Y.Liu, Kociolek & Q.X.Wang in Kociolek et al., 2018 (unaccepted, Illegitimate name.)
Species Pinnularia subsolaris (Grunow) Cleve, 1895 accepted as Pinnularia decrescens (Grunow) K.Krammer, 2000 (unaccepted, synonym)
  » Forma Pinnularia subsolaris f. subsolaris (Grunow) Cleve, 1895 represented as Navicula subsolaris f. subsolaris Grunow, 1882
  » Forma Pinnularia subsolaris f. truncata (Cleve-Euler) Cleve-Euler, 1955 represented as Pinnularia divergens var. truncata Cleve-Euler, 1915
  » Forma Pinnularia subsolaris f. brevistriata (Grunow) Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia subsolaris f. continua Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia subsolaris f. fasciata Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia subsolaris f. interrupta Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Pinnularia subsolaris f. kerguelenensis E.E.Manguin, 1954 (uncertain, unassessed)
  » Forma Pinnularia subsolaris f. mutabilis Manguin, 1942 (uncertain, unassessed)
  » Forma Pinnularia subsolaris f. soklii Tynni, 1976 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. asiatica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. australiensis Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. constricta Cleve-Euler, 1934 (1935) (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. diminuta Cleve-Euler, 1922 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. interrupta Skvortzow, 1935 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. interrupta (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. linearis Cleve, 1895 (uncertain, unassessed)
  » Variety Pinnularia subsolaris var. sinica Skvortzov, 2012 (uncertain)
Species Pinnularia termes Ehrenberg, 1843 accepted as Pinnularia biceps W.Gregory, 1856 (unaccepted, synonym)
Species Pinnularia trigonocephala Cleve, 1895 accepted as Pinnularia bihastata (A.Mann) R.M.Patrick, 1966 (unaccepted)
  » Forma Pinnularia trigonocephala f. parva (Cleve-Euler) Cleve-Euler, 1955 (uncertain, unassessed)
  » Forma Pinnularia trigonocephala f. trigonocephala Cleve, 1895 (uncertain, unassessed)
  » Forma Pinnularia trigonocephala f. typica Cleve-Euler, 1955 (uncertain, unassessed)
Species Pinnularia undulata W.Gregory, 1854 accepted as Caloneis undulata (W.Gregory) Krammer, 1985 (unaccepted)
  » Forma Pinnularia undulata f. stauroneiformis Hustedt, 1924 (uncertain, unassessed)
  » Variety Pinnularia undulata var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Pinnularia undulata var. sibirica Skvortzow, 1938 (uncertain, unassessed)
  » Variety Pinnularia undulata var. stauroneiformis Cleve-Euler, 1955 (uncertain, unassessed)
  » Variety Pinnularia undulata var. subundulata Grunow, 1882-1885 (uncertain, unassessed)
Species Pinnularia viridula (Kützing) Rabenhorst, 1853 accepted as Navicula viridula (Kützing) Ehrenberg, 1836 (unaccepted, synonym)
Species Pinnularia yarrensis (Grunow) A.Jurilj, 1957 accepted as Pinnunavis yarrensis (Grunow) H.Okuno, 1975 (unaccepted, synonym)

Species Pinnularia abnormis Skvortzow, 1937 (unassessed)
Species Pinnularia absita M.H.Hohn & J.Hellerman, 1963 (unassessed)
Species Pinnularia acidicola B. van de Vijver & R. Le Cohu, 2002 (unassessed)
Species Pinnularia acidobionta A.Tuji & T.Wanatabe, 2003 (unassessed)
Species Pinnularia acidojaponica M. Idei & H. Kobayasi in M. Idei & S. Mayama, 2001 (unassessed)
Species Pinnularia acidophila Hofmann & K.Krammer, 2000 (unassessed)
Species Pinnularia acorica K.Krammer & D.Metzeltin, 2000 (unassessed)
Species Pinnularia acoricola Hustedt, 1934 (unassessed)
  » Variety Pinnularia acoricola var. rostellata (Hustedt) K.Krammer, 2000 represented as Pinnularia rostellata Hustedt, 1934
  » Variety Pinnularia acoricola var. acoricola Hustedt in Schmidt et al., 1934 (uncertain, unassessed)
  » Variety Pinnularia acoricola var. amphigomphus Negoro, 1944 (uncertain, unassessed)
  » Variety Pinnularia acoricola var. cuneiformis Negoro, 1944 (uncertain, unassessed)
  » Variety Pinnularia acoricola var. elongatirhombica Wydrzycka (uncertain, unassessed)
  » Variety Pinnularia acoricola var. lanceolata Hustedt, 1934 (uncertain, unassessed)
  » Variety Pinnularia acoricola var. linearis Wydrzycka (uncertain, unassessed)
  » Variety Pinnularia acoricola var. osoresanensis Negoro, 1944 (uncertain, unassessed)
  » Variety Pinnularia acoricola var. pumilio Wydrzycka (uncertain, unassessed)
Species Pinnularia acoricolatoba Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 (unassessed)
Species Pinnularia acrosphaeria Rabenhorst, 1853 (unassessed)
Species Pinnularia acuminatopsis D. Metzeltin & H. Lange-Bertalot, 2007 (unassessed)
Species Pinnularia acuta W.Smith, 1853 (unassessed)
Species Pinnularia acuta sensu Strose, 1884 (unassessed)
Species Pinnularia acutiuscula Gregory, 1856 (unassessed)
Species Pinnularia acutobrebissonii Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 (unassessed)
Species Pinnularia adeana Mayer, 1946 (unassessed)
Species Pinnularia aequalis Ehrenberg, 1843 (unassessed)
Species Pinnularia aequilateralis Patrick & Freese, 1961 (unassessed)
Species Pinnularia affinis Ehrenberg, 1847 (unassessed)
Species Pinnularia agogoensis Foged, 1966 (unassessed)
Species Pinnularia alabamae K.Krammer, 2000 † (unassessed)
Species Pinnularia alandica Cleve-Euler, 1935 (unassessed)
Species Pinnularia alaskana Patrick & Freese, 1961 (unassessed)
Species Pinnularia aldenii R.W.Pillsbury & K.A.Slavik, 2006 (unassessed)
Species Pinnularia alfinitoana Lange-Bertalot & Metzeltin, 2003 (unassessed)
Species Pinnularia allansonii Cholnoky, 1958 (unassessed)
Species Pinnularia allmaniana Gregory, 1857 (unassessed)
Species Pinnularia allorgei Manguin, 1942 (unassessed)
Species Pinnularia alpiniformis B. Van de Vijver & L. Beyens in Van de Vijver, Frenot & Beyens, 2002 (unassessed)
Species Pinnularia alta K.Krammer, 2000 (unassessed)
Species Pinnularia altiplanensis H. Lange-Bertalot, K. Krammer & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000 (unassessed)
Species Pinnularia amabilis K.Krammer, 2000 (unassessed)
Species Pinnularia amae B. Van de Vijver, P. Ledegeanck & L. Beyens in Van de Vijver, Frenot & Beyens, 2002 (unassessed)
Species Pinnularia amaniensis Hustedt, 1921 (unassessed)
Species Pinnularia amazonica Metzeltin & Krammer in Metzeltin & Lange-Bertalot, 1998 (unassessed)
Species Pinnularia ambigua Ehrenberg in Ralfs in Pritchard, 1861 (unassessed)
  » Variety Pinnularia ambigua var. ambigua Cleve, 1895 (uncertain, unassessed)
Species Pinnularia amblys M.H.Hohn & J.Hellerman, 1963 (unassessed)
Species Pinnularia ambositrana D. Metzeltin in D. Metzeltin & H. Lange-Bertalot, 2002 (unassessed)
Species Pinnularia americana Ehrenberg, 1854 (unassessed)
Species Pinnularia ammerensis M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 (unassessed)
Species Pinnularia amoena Hustedt, 1965 (unassessed)
Species Pinnularia amphicentra Ehrenberg, 1862 (unassessed)
Species Pinnularia amphicephala A.Mayer, 1917 (unassessed)
Species Pinnularia amphicephala Ehrenberg, 1870 (unassessed)
Species Pinnularia amphiceros Ehrenberg, 1854 (unassessed)
Species Pinnularia amphigomphus Ehrenberg, 1843 (unassessed)
Species Pinnularia amphioxys Ehrenberg, 1843 (unassessed)
Species Pinnularia amphiprora Ehrenberg, 1843 (unassessed)
Species Pinnularia amphirhynchus G.L.Rabenhorst (unassessed)
Species Pinnularia amphirrhina Ehrenberg, 1854 (unassessed)
Species Pinnularia amphisbaena Ehrenberg, 1854 (unassessed)
Species Pinnularia amphisphenia Ehrenberg, 1876 (unassessed)
Species Pinnularia amphistylus Ehrenberg, 1845 (unassessed)
Species Pinnularia ampulliformis Manguin, 1964 (unassessed)
Species Pinnularia amundsenii Foged, 1964 (unassessed)
Species Pinnularia amurensis Skvortzov, 2012
Species Pinnularia anassae Cholnoky, 1957 (unassessed)
Species Pinnularia andina Frenguelli, 1942 (unassessed)
Species Pinnularia andreei Foged, 1964 (unassessed)
Species Pinnularia anglica K.Krammer, 1992 (unassessed)
Species Pinnularia angliciformis B. Van de Vijver & L. Beyens in Van de Vijver, Frenot & Beyens, 2002 (unassessed)
Species Pinnularia angulo-costata K.E. Lohman, 1957 (unassessed)
Species Pinnularia angulosa Krammer, 2000 (unassessed)
Species Pinnularia angusta K.E. Lohman, 1957 (unassessed)
Species Pinnularia angusteelliptica Cleve-Euler, 1955 (unassessed)
Species Pinnularia angustefasciata (unassessed)
Species Pinnularia angustiborealis K. Krammer & H. Lange-Bertalot in K. Krammer, 2000 (unassessed)
Species Pinnularia angustistriata D.Metzeltin & K.Krammer, 1998 (unassessed)
Species Pinnularia angustivalva Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (unassessed)
Species Pinnularia anomala Ehrenberg, 1854 (unassessed)
Species Pinnularia antarctica Ehrenberg, 1854 (unassessed)
Species Pinnularia antiqua Tscheremissinova, 1956 (unassessed)
Species Pinnularia aolandica (unassessed)
Species Pinnularia apicata Ehrenberg, 1854 (unassessed)
Species Pinnularia apiculata Gregory, 1855 (unassessed)
Species Pinnularia apis Ehrenberg, 1843 (unassessed)
Species Pinnularia aquaenigrae D. Metzeltin & H. Lange-Bertalot, 2007 (unassessed)
Species Pinnularia aquilonaris M.H.Hohn & J.Hellerman, 1963 (unassessed)
Species Pinnularia araucanensis Lange-Bertalot (unassessed)
Species Pinnularia araucaniae Ehrenberg, 1854 (unassessed)
Species Pinnularia archaica Skvortzov, 1976 (unassessed)
Species Pinnularia arctica Cleve, 1898 (unassessed)
Species Pinnularia argunensis Skvortzov, 2012
Species Pinnularia armenica (Poretzky) Robert, 1965 (unassessed)
Species Pinnularia arraniensis O'Meara, 1867 (unassessed)
Species Pinnularia asanzii De Oliveira & Steinitz-Kannan, 1992 (unassessed)
Species Pinnularia asburyana Boyer, 1922 (unassessed)
Species Pinnularia aspera (Ehrenberg) Ehrenberg, 1854 (unassessed)
Species Pinnularia asperula Ehrenberg, 1845 (unassessed)
Species Pinnularia asymmetrica Heiden in Schmidt et al., 1905 (unassessed)
Species Pinnularia asymmetrica (Cleve) Hustedt in Schmidt et al., 1934 (unassessed)
Species Pinnularia atlasi Darley, 1990 (unassessed)
Species Pinnularia atomus Hustedt, 1934 (unassessed)
Species Pinnularia aueri Cleve-Euler, 1948 (unassessed)
Species Pinnularia australis Ehrenberg, 1845 (unassessed)
Species Pinnularia australorabenhorstii B.van de Vijver, 2008 (unassessed)
Species Pinnularia bacilla McCall, 1933 (unassessed)
Species Pinnularia bacillaris Ehrenberg, 1854 (unassessed)
Species Pinnularia bacillaris Cleve-Euler, 1934 (unassessed)
Species Pinnularia bacilliformis K.Krammer, 1992 (unassessed)
Species Pinnularia backebergii Manguin in Bourrelly & Manguin, 1954 (unassessed)
Species Pinnularia baculus D. Metzeltin & H. Lange-Bertalot, 2007 (unassessed)
Species Pinnularia baicalensis Skvortzow & Meyer, 1928 (unassessed)
Species Pinnularia barbadensis Ehrenberg, 1854 (unassessed)
Species Pinnularia barberiana Foged, 1979 (unassessed)
  » Variety Pinnularia barberiana var. opouraensis Foged, 1979 (uncertain, unassessed)
Species Pinnularia barca Lohman & Andrews, 1968 (unassessed)
Species Pinnularia bardii Lange-Bertalot & Metzeltin, 2003 (unassessed)
Species Pinnularia barrowiana Patrick & Freese, 1961 (unassessed)
Species Pinnularia bartii Metzeltin & Lange-Bertalot (unassessed)
Species Pinnularia bertandii K. Krammer, 2000 (unassessed)
Species Pinnularia bicepsoides Kobayasi, 1975 (unassessed)
Species Pinnularia biclavata A.Cleve, 1922 (unassessed)
Species Pinnularia biclavatiformis Mayer, 1946 (unassessed)
Species Pinnularia biconstricta Cleve-Euler, 1932 (unassessed)
Species Pinnularia biconstrictoides M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 (unassessed)
Species Pinnularia bicuspidata Cleve-Euler, 1955 (unassessed)
Species Pinnularia bigibba E.E. Gaiser & J. Johansen, 2000 (unassessed)
Species Pinnularia bihastata (A.Mann) R.M.Patrick, 1966 (unassessed)
Species Pinnularia bilineata Skvortzov & Noda, 1971 (unassessed)
Species Pinnularia bioculata Manguin, 1964 (unassessed)
Species Pinnularia biprora Bailey (unassessed)
Species Pinnularia birnirkiana R.M.Patrick & L.R.Freese, 1961 (unassessed)
Species Pinnularia birostris Ehrenberg, 1842 (unassessed)
Species Pinnularia blandita Boyer, 1916 (unassessed)
Species Pinnularia blasii Lange-Bertalot & Metzeltin, 2003 (unassessed)
Species Pinnularia bleischii K.Krammer, 2000 (unassessed)
Species Pinnularia bockiana Mayer, 1946 (unassessed)
Species Pinnularia bockii D. Metzeltin & H. Lange-Bertalot, 2007 (unassessed)
Species Pinnularia bogosoensis Foged, 1966 (unassessed)
Species Pinnularia bombus Ehrenberg, 1844 (unassessed)
Species Pinnularia borealis sensu Berg, 1945 (unassessed)
Species Pinnularia borealis Mayer, 1925 (unassessed)
Species Pinnularia boreoelegans M.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2010 (unassessed)
Species Pinnularia boriana Ivanov & Eremenko, 1948 (unassessed)
Species Pinnularia bosshardii Meister, 1932 (unassessed)
Species Pinnularia bottnica K.Krammer, 2000 (unassessed)
Species Pinnularia bourrellyi Manguin in Bourrelly & Manguin, 1952 (unassessed)
Species Pinnularia boyeri R.M.Patrick, 1966 (unassessed)
Species Pinnularia boyeriformis Krammer & Metzeltin in Metzeltin & Lange-Bertalot, 1998 (unassessed)
Species Pinnularia bramanorum Ehrenberg, 1854 (unassessed)
Species Pinnularia brandeliformis K.Krammer, 1992 (unassessed)
  » Variety Pinnularia brandeliformis var. linearis K.Krammer, 2000 (uncertain, unassessed)
Species Pinnularia brandelii sensu Berg, 1945 (unassessed)
Species Pinnularia brauniana (Grunow) Studnicka, 1888 (unassessed)
Species Pinnularia brebissoniiformis K.Krammer, 2000 (unassessed)
Species Pinnularia brevistriata Grunow, 1880 (unassessed)
Species Pinnularia breweriana N.Foged, 1981 (unassessed)
Species Pinnularia brunii (unassessed)
Species Pinnularia bryophila Østrup, 1918 (unassessed)
Species Pinnularia buckzkoae D. Metzeltin & H. Lange-Bertalot, 2007 (unassessed)
Species Pinnularia bullacostae K.Krammer & Lange-Bertalot, 1999 (unassessed)
Species Pinnularia burckii (unassessed)
Species Pinnularia burkei Patrick, 1945 (unassessed)
Species Pinnularia butantanum (Krasske) Metzeltin in Metzeltin & Lange-Bertalot, 1998 (unassessed)
Species Pinnularia caffra Ehrenberg, 1854 (unassessed)
Species Pinnularia calcutta Skvortzov (unassessed)
  » Variety Pinnularia calcutta var. calcutta Skvortzow, 1935 (uncertain, unassessed)
  » Variety Pinnularia calcutta var. curta Skvortzow, 1935 (uncertain, unassessed)
Species Pinnularia caledonensis Schoeman, 1969 (unassessed)
Species Pinnularia canadensis K.Krammer, 2000 (unassessed)
Species Pinnularia canadodivergens Kulikovskiy, Lange-Bertalot & Metzeltin, 2010 (unassessed)
Species Pinnularia canops (unassessed)
Species Pinnularia capensis Ehrenberg, 1854 (unassessed)
Species Pinnularia capillacea Krishchtofovich, 1941 (unassessed)
Species Pinnularia capitata Ehrenberg, 1848 (unassessed)
Species Pinnularia capitellata Cleve-Euler, 1955 (unassessed)
Species Pinnularia caracana Ehrenberg ex Rabenhorst, 1853 (unassessed)
Species Pinnularia caraccana Ehrenberg ex Rabenhorst, 1853 (unassessed)
Species Pinnularia carambolae Frenguelli, 1933 (unassessed)
Species Pinnularia carbonum Ehrenberg, 1846 (unassessed)
Species Pinnularia cardinaliculus Cleve, 1895 † (unassessed)
  » Forma