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Melosiraceae Kützing, 1844, sensu emend.

149041  (urn:lsid:marinespecies.org:taxname:149041)

accepted
Family
Genus Angusticopula Houk et al., 2017
Genus Druridgea G.B. De Toni, 1894
Genus Ferocia Van de Vijver & Houk in Van de Vijver et al., 2017
Genus Melosira C.A. Agardh, 1824
  » Species Melosira agassizii Ostenfeld, 1909
    » Variety Melosira agassizii var. agassizii Ostenfeld, 1909 (uncertain, unassessed)
    » Variety Melosira agassizii var. malayensis Hustedt, 1942 (uncertain, unassessed)
  » Species Melosira baikalensis S.Wislouch, 1924
  » Species Melosira borreri Greville, 1833
    » Forma Melosira borreri f. applanata A. Schmidt, 1893 (uncertain, unassessed)
    » Forma Melosira borreri f. borreri Greville, 1833 (uncertain, unassessed)
    » Forma Melosira borreri f. minor W. West, 1912 (uncertain, unassessed)
    » Forma Melosira borreri f. minores Peragallo & Peragallo, 1907 (uncertain, unassessed)
    » Variety Melosira borreri var. australis M. Peragallo (uncertain, unassessed)
    » Variety Melosira borreri var. borreri Castracane (uncertain, unassessed)
    » Variety Melosira borreri var. bottnica Grunow (uncertain, unassessed)
    » Variety Melosira borreri var. bottnica Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
    » Variety Melosira borreri var. hispida Castracane, 1878 (uncertain, unassessed)
    » Variety Melosira borreri var. ignimontana Brun & Héribaud in Héribaud, 1893 (uncertain, unassessed)
    » Variety Melosira borreri var. minor (Peragallo & Peragallo) Tempère & Peragallo, 1915 (uncertain, unassessed)
    » Variety Melosira borreri var. moniliformis (O.F.Müller) Grunow, 1878 (uncertain, unassessed)
    » Variety Melosira borreri var. octogona Grunow, 1878 (uncertain, unassessed)
    » Variety Melosira borreri var. subglobosa Grunow, 1878 (uncertain, unassessed)
  » Species Melosira borrerii
    » Forma Melosira borrerii f. applanata Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
    » Forma Melosira borrerii f. beta W. Smith, 1856 (uncertain, unassessed)
    » Variety Melosira borrerii var. australis M. Peragallo, 1921 (uncertain, unassessed)
    » Variety Melosira borrerii var. hispida Castracane, 1878 (uncertain, unassessed)
  » Species Melosira dickiei (Thwaites) Kützing, 1849
    » Forma Melosira dickiei f. chilensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira dickiei f. dickiei (Thwaites) Kützing, 1849 (uncertain, unassessed)
    » Forma Melosira dickiei f. nuda Hajós, 1959 (uncertain, unassessed)
    » Forma Melosira dickiei f. porosa Hajós, 1959 (uncertain, unassessed)
    » Variety Melosira dickiei var. fossilis Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira hormoides Montagne, 1939
  » Species Melosira indica Skvortzov
  » Species Melosira inflexa (Roth) Guiry, 2019
  » Species Melosira irregularis O.Müller
    » Variety Melosira irregularis var. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Species Melosira jeanbertrandiana Van de Vijver & Crawford
  » Species Melosira jilinensis Huang in Huang et al., 1983 †
  » Species Melosira jurgensi
    » Variety Melosira jurgensi var. mongolica Skvortzow ex Skvortzow, 1971 (uncertain, unassessed)
  » Species Melosira lentigera (Carmichael) Harvey
    » Variety Melosira lentigera var. lentigera Harvey, 1841 (uncertain, unassessed)
    » Variety Melosira lentigera var. robusta (Heribaud) (uncertain, unassessed)
  » Species Melosira lyrata Ehrenberg
    » Forma Melosira lyrata f. biseriata (Grunow) Cleve-Euler, 1951 represented as Melosira lyrata var. biseriata Grunow in Van Heurck, 1882
    » Forma Melosira lyrata f. seriata (Otto Müller) Cleve-Euler, 1951 represented as Melosira lirata var. seriata Otto Müller, 1898
    » Variety Melosira lyrata var. tenuiores (Grunow in Van Heurck) F.W. Mills, 1934 represented as Melosira lyrata f. tenuior Grunow in Van Heurck, 1882
    » Forma Melosira lyrata f. lacustris Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira lyrata f. multiseriata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira lyrata f. multiseriata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira lyrata f. tenuior Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira lyrata var. biseriata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira lyrata var. exigua Cleve-Euler, 1922 (uncertain, unassessed)
    » Variety Melosira lyrata var. genuina Cleve-Euler, 1951 (uncertain, unassessed)
  » Species Melosira montagnei (Kützing) N.G.W.Lagerstedt
  » Species Melosira ornata Grunow
    » Variety Melosira ornata var. minor Cleve-Euler in Cleve-Euler & Hessland, 1948 (uncertain, unassessed)
    » Variety Melosira ornata var. ornata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira ornata var. reducta Forti, 1912 (uncertain, unassessed)
    » Variety Melosira ornata var. saratoviana Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira praedistans
    » Forma Melosira praedistans f. curvata Moiseeva, 1971 (uncertain, unassessed)
    » Forma Melosira praedistans f. curvata Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praedistans f. lyrata Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praedistans f. seriata Moiseeva, 1971 (uncertain, unassessed)
    » Variety Melosira praedistans var. praedistans Jousé, 1952 (uncertain, unassessed)
  » Species Melosira punctata (W.Smith) J.Dannf., 1882
  » Species Melosira pyxis Otto Müller
    » Forma Melosira pyxis f. dechlamydea Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira pyxis f. dechlamydea Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira pyxis f. primigenia Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira pyxis f. pyxis Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira pyxis var. fossilis Manguin, 1952 (uncertain, unassessed)
    » Variety Melosira pyxis var. sulcata Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira roseana Rabenhorst
  » Species Melosira salina Kützing, 1844
    » Variety Melosira salina var. concatenata Kützing, 1844 (uncertain, unassessed)
    » Variety Melosira salina var. salina Kützing, 1844 (uncertain, unassessed)
  » Species Melosira sol Kützing, 1849
    » Forma Melosira sol f. interjecta (Janisch in Schmidt et al.) M. Peragallo, 1921 represented as Orthosira interjecta Janisch in Schmidt et al., 1892
    » Forma Melosira sol f. omma (Cleve) M. Peragallo, 1921 represented as Melosira omma var. omma Cleve, 1885
    » Forma Melosira sol f. polaris (M. Peragallo) Manguin, 1960 represented as Melosira omma var. polaris M. Peragallo, 1921
    » Forma Melosira sol f. sol (Ehrenberg) Kützing, 1849 represented as Gaillonella sol Ehrenberg, 1844
    » Variety Melosira sol var. hungarica (Schmidt in Schmidt et al.) M. Peragallo, 1921 represented as Melosira hungarica Schmidt in Schmidt et al., 1892
    » Forma Melosira sol f. terminalis M. Peragallo, 1921 (uncertain, unassessed)
    » Forma Melosira sol f. typica M. Peragallo, 1921 (uncertain, unassessed)
    » Variety Melosira sol var. breviradiata Tempère & Peragallo, 1909 (uncertain, unassessed)
    » Variety Melosira sol var. castracanei F. W. Mills, 1934 (uncertain, unassessed)
    » Variety Melosira sol var. fossilis Pantocsek (uncertain, unassessed)
    » Variety Melosira sol var. marginalis M. Peragallo, 1921 (uncertain, unassessed)
    » Variety Melosira sol var. subhyalina (Van Heurck) (uncertain, unassessed)
  » Species Melosira undulata (Ehrenberg) Kützing, 1844
    » Variety Melosira undulata var. normanii Arnott, 1882
    » Forma Melosira undulata f. californica Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
    » Forma Melosira undulata f. hungarica Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
    » Forma Melosira undulata f. producta Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
    » Variety Melosira undulata var. aequalis (Agardh) (uncertain, unassessed)
    » Variety Melosira undulata var. debilis Héribaud, 1903 (uncertain, unassessed)
    » Variety Melosira undulata var. fungica Manguin, 1949 (uncertain, unassessed)
    » Variety Melosira undulata var. genuina Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
    » Variety Melosira undulata var. gracilior Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira undulata var. minor Pantocsek, 1889 (uncertain, unassessed)
    » Variety Melosira undulata var. normannii Arnott in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira undulata var. pygmea Pantocsek, 1903 (uncertain, unassessed)
    » Variety Melosira undulata var. samoensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira undulata var. spiralis Skvortzow, 1937 (uncertain, unassessed)
    » Variety Melosira undulata var. triocellata Rehakova, 1980 (uncertain, unassessed)
    » Variety Melosira undulata var. typica Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira undulata var. undulata (Ehrenberg) Kützing, 1844 (uncertain, unassessed)
  » Species Melosira varians C.Agardh, 1827
    » Variety Melosira varians var. aequalis (Agardh) Kützing, 1844 represented as Melosira aequalis Agardh, 1832
    » Variety Melosira varians var. subflexilis (Kützing) Brun, 1880 represented as Melosira subflexilis Kützing, 1833
    » Variety Melosira varians var. genuina Kirchner, 1878 (uncertain, unassessed)
    » Variety Melosira varians var. genuina Dorofeiev, 1885 (uncertain, unassessed)
    » Variety Melosira varians var. moniliformis (Otto Müller) Playfair, 1915 (uncertain, unassessed)
    » Variety Melosira varians var. orichalcea (Mertens ex specim. authent. Jurgens) Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira varians var. varians Agardh, 1827 (uncertain, unassessed)
    » Variety Melosira varians var. varians Kirchner, 1878 (uncertain, unassessed)
  » Species Melosira youngi Skvortzov
  » Species Melosira angulata (Gregory) Rabenhorst, 1864 represented as Orthosira angulata Gregory, 1857
    » Variety Melosira angulata var. angustissima Borutskii, 1952 (uncertain, unassessed)
  » Species Melosira arctica (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella arctica (Dickie) Ehrenberg, 1853
  » Species Melosira arentii (Kolbe) Nagumo & Kobayasi, 1977 represented as Cyclotella arentii Kolbe, 1948
  » Species Melosira areolata A.I.Moissejeva, 1971 represented as Alveolophora areolata A.I.Moiseeva, 1990 † (homotypic synonym)
  » Species Melosira asiatica Brun in Schmidt et al., 1892 represented as Cyclotella asiatica Brun in Brun & Tempère, 1889
  » Species Melosira baileyi (H.L.Smith) Wolle, 1890 represented as Cestodiscus baileyi H.L.Smith, 1878 †
  » Species Melosira binderiana (Kützing) Rabenhorst, 1853 represented as Melosira italica var. binderiana Kützing, 1844
  » Species Melosira californica (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella californica Ehrenberg, 1852
  » Species Melosira calligera (Ehrenberg) Kützing, 1849 represented as Gaillonella calligera Ehrenberg, 1845
  » Species Melosira campylosira (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella campylosira Ehrenberg, 1854
  » Species Melosira castracani (Brun) Tsumura, 1967 represented as Cyclotella castracani Brun, 1891
  » Species Melosira cataractarum F.Hustedt represented as Nanofrustulum cataractarum (Hust.) C.E.Wetzel, E.Morales & Ector, 2019
    » Forma Melosira cataractarum f. cataractarum Hustedt, 1937 (uncertain, unassessed)
    » Forma Melosira cataractarum f. laevis Manguin, 1942 (uncertain, unassessed)
    » Forma Melosira cataractarum f. ovata Foged, 1964 (uncertain, unassessed)
  » Species Melosira circularis (Ehreb.) Ralfs, 1861 represented as Gaillonella circularis Ehrenberg, 1854
  » Species Melosira coarctata (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella coarctata Ehrenberg, 1843
  » Species Melosira concatenata (Kützing) Rabenhorst, 1864 represented as Melosira salina var. concatenata Kützing, 1844
  » Species Melosira concentrica (A.Schmidt) J.Fenner represented as Paralia concentrica Schmidt in Schmidt et al., 1892
  » Species Melosira crenata (Ehrenberg) Cramer, 1868 represented as Gaillonella crenata Ehrenberg, 1844
  » Species Melosira crenulata (Ehrenberg) Kützing, 1844 represented as Gaillonella crenulata var. crenulata Ehrenberg, 1843
    » Forma Melosira crenulata f. binderana (Kützing) Van Heurck, 1885 represented as Melosira italica var. binderiana Kützing, 1844
    » Forma Melosira crenulata f. crenulata (Ehrenberg) Kützing, 1844 represented as Gaillonella crenulata var. crenulata Ehrenberg, 1843
    » Forma Melosira crenulata f. strangulata (Héribaud) Lauby, 1910 represented as Melosira strangulata Héribaud, 1908
    » Forma Melosira crenulata f. tenuis (Kützing) Van Heurck, 1885 represented as Melosira tenuis var. tenuis Kützing, 1844
    » Variety Melosira crenulata var. binderana (Kützing) Grunow in Van Heurck, 1882 represented as Melosira binderana var. binderana Kützing, 1844
    » Variety Melosira crenulata var. italica (Ehrenberg) Grunow in Van Heurck, 1882 represented as Gaillonella italica Ehrenberg, 1838
    » Variety Melosira crenulata var. laevis Ralfs, 1861 represented as Gaillonella laevis Ehrenberg, 1854
    » Variety Melosira crenulata var. tenuis (Kützing) Grunow, 1884 represented as Melosira tenuis var. tenuis Kützing, 1844
    » Forma Melosira crenulata f. curvata Fitschen, 1905 (uncertain, unassessed)
    » Variety Melosira crenulata var. ambigua Grunow, 1882 (uncertain, unassessed)
    » Variety Melosira crenulata var. ambigua sensu Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira crenulata var. armata Lauby, 1909 (uncertain, unassessed)
    » Variety Melosira crenulata var. crenulata Petkov, 1925 (uncertain, unassessed)
    » Variety Melosira crenulata var. curvata Pantocsek, 1902 (uncertain, unassessed)
    » Variety Melosira crenulata var. fossilis Pantocsek, 1889 (uncertain, unassessed)
    » Variety Melosira crenulata var. hungarica Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira crenulata var. javanica Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira crenulata var. jeremiae Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira crenulata var. jonensis (Grunow in Van Heurck) Tempère & Peragallo, 1911 (uncertain, unassessed)
    » Variety Melosira crenulata var. kamtschatica Grunow ex Cleve & Moller, 1877 (uncertain, unassessed)
    » Variety Melosira crenulata var. lanceolata Cleve ex Yakowleff, 1924 (uncertain, unassessed)
    » Variety Melosira crenulata var. lineolata Grunow, 1884 (uncertain, unassessed)
    » Variety Melosira crenulata var. mocsarensis Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira crenulata var. pantocsekii De Toni, 1894 (uncertain, unassessed)
    » Variety Melosira crenulata var. procera Tempère & Peragallo, 1911 (uncertain, unassessed)
    » Variety Melosira crenulata var. semilaevis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira crenulata var. strangulata Tempère & Peragallo, 1914 (uncertain, unassessed)
    » Variety Melosira crenulata var. tenuissima Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira crenulata var. undulata M. Peragallo & Héribaud in Héribaud, 1893 (uncertain, unassessed)
    » Variety Melosira crenulata var. valida Grunow, 1882 (uncertain, unassessed)
  » Species Melosira crotonensis (J.W. Bailey) H.L. Smith, 1876 represented as Gaillonella crotonensis J.W. Bailey, 1854
  » Species Melosira debyi (Pantocsek) F.W. Mills, 1934 represented as Paralia debyi Pantocsek, 1892
  » Species Melosira debyi (Pantocsek) Jurilj, 1957 represented as Paralia debyi Pantocsek, 1892
  » Species Melosira distans (Grunow in Van Heurck) Skabichevskii, 1960 represented as Melosira distans f. alpigena Grunow in Van Heurck, 1882
    » Forma Melosira distans f. distans (Ehrenberg) Kützing, 1844 represented as Gaillonella distans Ehrenberg, 1837
    » Variety Melosira distans var. decipiens (Grove in Schmidt et al.) Cleve-Euler, 1951 represented as Melosira decipiens Grove in Schmidt et al., 1893
    » Variety Melosira distans var. exigua (Cleve-Euler) Cleve-Euler, 1934 represented as Melosira lyrata var. exigua Cleve-Euler, 1922
    » Variety Melosira distans var. scala (Ehrenberg) Grunow in Van Heurck, 1882 represented as Gaillonella scala Ehrenberg, 1854
    » Variety Melosira distans var. valida (Grunow in Van Heurck) F.W. Mills, 1934 represented as Melosira crenulata var. valida Grunow, 1882
    » Forma Melosira distans f. alpigena Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira distans f. clinostriata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira distans f. clinostriata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira distans f. curvata Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira distans f. humilis Cleve-Euler, 1939 (uncertain, unassessed)
    » Forma Melosira distans f. minor Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira distans f. minor Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira distans f. pfaffiana (Reinsch) Skabichevskii, 1960 (uncertain, unassessed)
    » Forma Melosira distans f. tenuis Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira distans f. validior Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira distans f. validior Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira distans var. biseriata (Grunow in Van Heurck) (uncertain, unassessed)
    » Variety Melosira distans var. genuina Kirchner, 1878 (uncertain, unassessed)
    » Variety Melosira distans var. genuina Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira distans var. gracilis Tynni, 1994 (uncertain, unassessed)
    » Variety Melosira distans var. hyalina Skvortzov, 1975 (uncertain, unassessed)
    » Variety Melosira distans var. laevissima Lemmermann, 1903 (uncertain, unassessed)
    » Variety Melosira distans var. laevissima Lemmermann, 1902 (uncertain, unassessed)
    » Variety Melosira distans var. ovata Iwahashi, 1935 (uncertain, unassessed)
    » Variety Melosira distans var. robusta Manguin, 1949 (uncertain, unassessed)
    » Variety Melosira distans var. seriata (Otto Müller) (uncertain, unassessed)
  » Species Melosira epidendron (Ehrenberg) Boyer, 1926 represented as Stephanosira epidendron Ehrenberg, 1848
  » Species Melosira febigerii (Grunow in Cleve & Grunow) Mann, 1907 represented as Podosira febigeri Grunow in Cleve & Grunow, 1880
  » Species Melosira franklinii (Ehrenberg) Cleve, 1868 represented as Craspedodiscus franklinii Ehrenberg, 1853
  » Species Melosira gallica (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella gallica Ehrenberg, 1836
    » Forma Melosira gallica f. minor Lauby, 1910 (uncertain, unassessed)
  » Species Melosira glacialis (Grunow) Cleve-Euler, 1951 represented as Podosira hormoides var. glacialis Grunow, 1884
  » Species Melosira granulata (Otto Müller) Skabichevskii, 1960 represented as Melosira granulata f. angustissima Otto Müller, 1899
  » Species Melosira granulata (Otto Müller) Cleve-Euler, 1938 represented as Melosira granulata f. angustissima Otto Müller, 1899
  » Species Melosira halophila (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella halophila Ehrenberg, 1854
  » Species Melosira horologium (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella horologium Ehrenberg, 1843
  » Species Melosira interjecta (Janisch in Schmidt et al.) De Toni, 1894 represented as Orthosira interjecta Janisch in Schmidt et al., 1892
  » Species Melosira irregularis (Eichwald) Eichwald, 1847 represented as Gaillonella irregularis Eichwald, 1844
  » Species Melosira italica (Grunow) Skabichevskii, 1960 represented as Melosira italica var. valida Grunow, 1881
    » Forma Melosira italica f. ambigua (Grunow in Van Heurck) A. Cleve-Euler in Backmann & Cleve-Euler, 1922 represented as Melosira crenulata var. ambigua Grunow, 1882
    » Forma Melosira italica f. ambigua (Grunow in Van Heurck) Balachonzew (Bolochonzew), 1911 represented as Melosira crenulata var. ambigua Grunow, 1882
    » Forma Melosira italica f. curvata (Pantocsek) Hustedt, 1927 represented as Melosira crenulata var. curvata Pantocsek, 1902
    » Forma Melosira italica f. italica (Ehrenberg) Kützing, 1844 represented as Gaillonella italica Ehrenberg, 1838
    » Forma Melosira italica f. spiralis (Skuja) Cleve-Euler, 1951 represented as Melosira ambigua f. spiralis Skuja, 1948
    » Forma Melosira italica f. tenuis (Kützing) Otto Müller, 1904 represented as Melosira tenuis var. tenuis Kützing, 1844
    » Forma Melosira italica f. tenuis (Kützing) Mayer, 1913 represented as Melosira tenuis var. tenuis Kützing, 1844
    » Forma Melosira italica f. angusta Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira italica f. bacilligera Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira italica f. beta Schonfeldt, 1907 (uncertain, unassessed)
    » Forma Melosira italica f. curvata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira italica f. curvata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira italica f. curvata (Pantocsek) Skabichevskii, 1960 (uncertain, unassessed)
    » Forma Melosira italica f. curvata Hustedt, 1930 (uncertain, unassessed)
    » Forma Melosira italica f. decussata Tynni, 1994 (uncertain, unassessed)
    » Forma Melosira italica f. fossilis Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira italica f. genuina Mayer, 1913 (uncertain, unassessed)
    » Forma Melosira italica f. punctatissima Manguin, 1952 (uncertain, unassessed)
    » Forma Melosira italica f. spiralis Kisselev, 1929 (uncertain, unassessed)
    » Forma Melosira italica f. spiralis Saweljewa-Dolgowa, 1925 (uncertain, unassessed)
    » Forma Melosira italica f. subarctica (Otto Müller) (uncertain, unassessed)
    » Forma Melosira italica f. tenuis Tauson, 1934 (uncertain, unassessed)
    » Forma Melosira italica f. tenuis (Kützing) (uncertain, unassessed)
    » Forma Melosira italica f. tenuis Skvortzow & Meyer, 1917 (uncertain, unassessed)
    » Forma Melosira italica f. tenuis Mayer, 1913 (uncertain, unassessed)
    » Variety Melosira italica var. angustissima Wertebnaja, 1939 (uncertain, unassessed)
    » Variety Melosira italica var. binderiana Kützing, 1844 (uncertain, unassessed)
    » Variety Melosira italica var. gamma Otto Müller, 1906 (uncertain, unassessed)
    » Variety Melosira italica var. genuina Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira italica var. ikapoensis Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira italica var. irregularis K.E. Lohman, 1957 (uncertain, unassessed)
    » Variety Melosira italica var. kondeensis (Otto Müller) (uncertain, unassessed)
    » Variety Melosira italica var. muzzanensis (Meister) Mayer, 1939 (uncertain, unassessed)
    » Variety Melosira italica var. muzzanensis Cleve-Euler, 1922 (uncertain, unassessed)
    » Variety Melosira italica var. orichalcea (Mertens) Nylander, 1861 (uncertain, unassessed)
    » Variety Melosira italica var. spiralis Meyer, 1926 (uncertain, unassessed)
    » Variety Melosira italica var. subtilis Cleve-Euler, 1922 (uncertain, unassessed)
  » Species Melosira italica (Grunow) Cleve-Euler, 1938 represented as Melosira crenulata var. ambigua Grunow, 1882
  » Species Melosira jouseana Moissejeva, 1971 † represented as Alveolophora jouseana (A.I.Moiseeva) A.I.Moiseeva, 1990 † (homotypic synonym)
  » Species Melosira laminaris (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella laminaris Ehrenberg, 1854
  » Species Melosira maculata Lagerst., 1876 represented as Podosira maculata W.Smith, 1856
  » Species Melosira marchica (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella marchica Ehrenberg, 1843
  » Species Melosira marina (W.Smith) Janisch, 1862 represented as Orthosira marina W. Smith, 1856
  » Species Melosira mesodon (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella mesodon Ehrenberg, 1854
  » Species Melosira nummuloides C.Agardh, 1824 represented as Melosira discigera Agardh, 1824
    » Variety Melosira nummuloides var. alta Jurilj, 1957 (uncertain, unassessed)
    » Variety Melosira nummuloides var. arctica Cleve, 1898 (uncertain, unassessed)
    » Variety Melosira nummuloides var. biharensis Pantocsek, 1886 (uncertain, unassessed)
    » Variety Melosira nummuloides var. borholen Cleve, 1896 (uncertain, unassessed)
    » Variety Melosira nummuloides var. brasiliensis Grunow, 1884 (uncertain, unassessed)
    » Variety Melosira nummuloides var. concatenata (Kützing) (uncertain, unassessed)
    » Variety Melosira nummuloides var. concentrica Grunow ex Cleve & Moller, 1879 (uncertain, unassessed)
    » Variety Melosira nummuloides var. elesdiana Pantocsek, 1886 (uncertain, unassessed)
    » Variety Melosira nummuloides var. gamma W. Smith, 1856 (uncertain, unassessed)
    » Variety Melosira nummuloides var. hyperborea Grunow ex Cleve & Moller, 1882 (uncertain, unassessed)
    » Variety Melosira nummuloides var. nummuloides (Dillwyn) Agardh, 1824 (uncertain, unassessed)
    » Variety Melosira nummuloides var. pedunculata Carruthers, 1864 (uncertain, unassessed)
    » Variety Melosira nummuloides var. salina (Kützing) (uncertain, unassessed)
  » Species Melosira oceanica (Ehrenberg; Ehrenberg) Leuduger-Fortmorel, 1879 represented as Endictya oceanica Ehrenberg, 1845
  » Species Melosira pantocseki (Van Heurck) Frenguelli, 1960 represented as Hyalodiscus pantocsekii var. pantocsekii Van Heurck, 1909
  » Species Melosira patagonica (Otto Müller) Cleve-Euler represented as Melosira lineolata var. patagonica Otto Müller, 1909
  » Species Melosira pileata (Ehrenberg) Kützing represented as Gaillonella pileata Ehrenberg, 1844
  » Species Melosira polycystinica (Pantocsek) F.W. Mills, 1934 represented as Paralia polycystinica Pantocsek, 1892
  » Species Melosira polymorpha H.Bethge represented as Gaillonella italica Ehrenberg, 1838
    » Forma Melosira polymorpha f. alpha (Otto Müller) Bethge, 1925 represented as Melosira granulata var. alpha Otto Müller, 1903
    » Forma Melosira polymorpha f. beta (Otto Müller) Bethge, 1925 represented as Melosira granulata var. beta Otto Müller, 1903
    » Forma Melosira polymorpha f. crenulata (Ehrenberg) Bethge, 1925 represented as Gaillonella crenulata var. crenulata Ehrenberg, 1843
    » Forma Melosira polymorpha f. gamma (Otto Müller) Bethge, 1925 represented as Melosira granulata var. gamma Otto Müller, 1903
    » Forma Melosira polymorpha f. goetzeana (Otto Müller) Bethge, 1925 represented as Melosira goetzeana f. goetzeana Otto Müller, 1904
    » Forma Melosira polymorpha f. ikapoensis (Otto Müller) Bethge, 1925 represented as Melosira ikapoensis var. ikapoensis Otto Müller, 1904
    » Forma Melosira polymorpha f. lacustris (Grunow) Bethge, 1925 represented as Melosira lyrata f. lacustris Grunow in Van Heurck, 1882
    » Forma Melosira polymorpha f. minor (Otto Müller) Bethge, 1925 represented as Melosira ikapoensis var. minor Otto Müller, 1904
    » Forma Melosira polymorpha f. nyassensis (Otto Muller; Otto Muller) Bethge, 1925 represented as Melosira nyassensis var. nyassensis Otto Müller, 1903
    » Forma Melosira polymorpha f. peregrina (Otto Müller) Bethge, 1925 represented as Melosira nyassensis f. peregrina Otto Muller, 1904
    » Forma Melosira polymorpha f. plicatella (Otto Müller) Bethge, 1925 represented as Melosira italica var. plicatella Otto Müller, 1904
    » Forma Melosira polymorpha f. procera (Otto Müller) Bethge, 1925 represented as Melosira ikapoensis var. procera Otto Müller, 1904
    » Forma Melosira polymorpha f. pyxis (Otto Müller) Bethge, 1925 represented as Melosira pyxis f. pyxis Otto Müller, 1904
    » Forma Melosira polymorpha f. sulcata (Otto Müller) Bethge, 1925 represented as Melosira pyxis var. sulcata Otto Müller, 1904
    » Forma Melosira polymorpha f. tenuis (Kützing) Bethge, 1925 represented as Melosira tenuis var. tenuis Kützing, 1844
    » Forma Melosira polymorpha f. tubulosa (Otto Müller) Bethge, 1925 represented as Melosira goetzeana f. goetzeana Otto Müller, 1904
    » Variety Melosira polymorpha var. africana (Otto Müller) Bethge, 1925 represented as Melosira distans var. africana O.Müller, 1904
    » Variety Melosira polymorpha var. argus (Otto Müller) Bethge, 1925 represented as Melosira argus f. argus Otto Müller, 1904
    » Variety Melosira polymorpha var. distans (Ehrenberg) Bethge, 1925 represented as Gaillonella distans Ehrenberg, 1837
    » Variety Melosira polymorpha var. granulata (Ehrenberg) Bethge, 1925 represented as Gaillonella granulata var. granulata Ehrenberg, 1843
    » Variety Melosira polymorpha var. herzogii (Lemmermann) Bethge, 1925 represented as Melosira herzogii var. herzogii Lemmermann, 1910
    » Variety Melosira polymorpha var. kondeensis (Otto Müller) Bethge, 1925 represented as Melosira kondeensis Otto Müller, 1904
    » Variety Melosira polymorpha var. limnetica (Otto Müller) Bethge, 1925 represented as Melosira distans var. limnetica Otto Müller, 1904
    » Variety Melosira polymorpha var. magnusii (Otto Müller) Bethge, 1925 represented as Melosira magnusii Otto Müller, 1904
    » Variety Melosira polymorpha var. mbasiensis (Otto Müller) Bethge, 1925 represented as Melosira mbasiensis Otto Müller, 1904
    » Variety Melosira polymorpha var. muzzanensis (Meister) Bethge, 1925 represented as Melosira muzzanensis Meister, 1912
    » Variety Melosira polymorpha var. nivalis (W. Smith) Bethge, 1925 represented as Melosira nivalis W.Smith, 1855
    » Variety Melosira polymorpha var. pfaffiana (Reinsch) Bethge, 1925 represented as Melosira pfaffiana Reinsch, 1867
    » Variety Melosira polymorpha var. seriata (Otto Müller) Bethge, 1925 represented as Melosira lirata var. seriata Otto Müller, 1898
    » Variety Melosira polymorpha var. solida (Eulenstein manuscript, Grunow) Bethge, 1925 represented as Melosira solida var. solida Eulenstein in Grunow in Van Heurck, 1882
    » Variety Melosira polymorpha var. valida (Grunow in Van Heurck) Bethge, 1925 represented as Melosira crenulata var. valida Grunow, 1882
    » Forma Melosira polymorpha f. alpha Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. alpha (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. alpha Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. alpha Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. alpha Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. ambigua (Grunow in Van Heurck) Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. beta Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. beta (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. beta (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. beta Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. beta Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. gamma Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. gamma (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. gamma (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. gamma Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. gamma Bethge, 1925 (uncertain, unassessed)
    » Forma Melosira polymorpha f. procera (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. alpigena (Grunow in Van Heurck) Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. baikalensis Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. helvetica (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. islandica (Otto Müller) Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. lirata (Ehrenberg) Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. polymorpha Bethge, 1925 (uncertain, unassessed)
    » Variety Melosira polymorpha var. subarctica (Otto Müller) Bethge, 1925 (uncertain, unassessed)
  » Species Melosira punctigera (Ehrenberg) J.Ralfs represented as Gaillonella punctigera Ehrenberg, 1842
  » Species Melosira radiata Grunow, 1870 represented as Cyclotella radiata Brightwell, 1860
  » Species Melosira rossica (Pantocsek) F.W. Mills, 1934 represented as Paralia rossica Pantocsek, 1889
  » Species Melosira ruttneri Hustedt, 1937 represented as Angusticopula robusta (Hustedt) Houk et al., 2017
  » Species Melosira scala (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella scala Ehrenberg, 1854
  » Species Melosira sculpta (Ehrenberg) Kützing, 1849 represented as Gaillonella sculpta Ehrenberg, 1845
  » Species Melosira setosa Greville, 1866 represented as Ferocia setosa Van de Vijver & Houk in Van de Vijver et al., 2017
    » Variety Melosira setosa var. setosa Greville, 1886 (uncertain, unassessed)
    » Variety Melosira setosa var. tristani Cleve-Euler, 1949 (uncertain, unassessed)
  » Species Melosira siberica (Grunow in Van Heurck; Grunow) Thum, 1885 represented as Paralia sulcata f. siberica (Grunow in Van Heurck) Grunow, 1884
  » Species Melosira soochowensis Skvortzow, 1946 represented as Melosira baicalensis f. soochowensis Skvortzov (unassessed)
  » Species Melosira spinosa (W. Smith) Brun, 1880 represented as Orthosira spinosa W.Smith, 1855
  » Species Melosira subarctica Otto Müller represented as Melosira italica f. subarctica (Otto Müller)
  » Species Melosira sulcata (Ehrenberg) Kützing, 1844 represented as Gaillonella sulcata Weisse, 1854
    » Forma Melosira sulcata f. biseriata (Grunow) Peragallo & Peragallo, 1908 represented as Paralia sulcata f. biseriata Grunow, 1884
    » Forma Melosira sulcata f. coronata (Ehrenberg; Ehernberg) Grunow in Van Heurck, 1882 represented as Gaillonella coronata Ehrenberg, 1845
    » Forma Melosira sulcata f. coronata (Ehrenberg; Ehrenberg) Peragallo & Peragallo, 1908 represented as Gaillonella coronata Ehrenberg, 1845
    » Forma Melosira sulcata f. crenulata (Grunow) Frenguelli, 1924 represented as Paralia sulcata f. crenulata Grunow, 1884
    » Forma Melosira sulcata f. genuina (Grunow) Peragallo & Peragallo, 1908 represented as Paralia sulcata f. genuina Grunow, 1884
    » Forma Melosira sulcata f. hungarica (Pantocsek) F.W. Mills, 1934 represented as Paralia sulcata f. hungarica Pantocsek, 1889
    » Forma Melosira sulcata f. sulcata (Ehrenberg) Kützing, 1844 represented as Gaillonella sulcata Weisse, 1854
    » Variety Melosira sulcata var. minima (Østrup) F.W. Mills, 1934 represented as Paralia sulcata var. minima Østrup, 1895
    » Variety Melosira sulcata var. separanda (Schmidt in Schmidt et al.) Schmidt in Schmidt et al., 1892 represented as Paralia separanda Schmidt in Schmidt et al., 1892
    » Forma Melosira sulcata f. barbadensis (Schmidt in Schmidt et al.) Hanna, 1969 (uncertain, unassessed)
    » Forma Melosira sulcata f. barbadensis Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
    » Forma Melosira sulcata f. cellulis (uncertain, unassessed)
      » Subforma Melosira sulcata f. cellulis minoribus Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira sulcata f. coronata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira sulcata f. coronata (Ehrenberg; Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. coronata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. coronata (Ehrenberg; Ehrenberg) (uncertain, unassessed)
    » Forma Melosira sulcata f. coronata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. hexagona (Grunow in Schmidt et al.) Fricke, 1902 (uncertain, unassessed)
    » Forma Melosira sulcata f. minor Tempère & Peragallo, 1914 (uncertain, unassessed)
    » Forma Melosira sulcata f. minor Tempère & Peragallo, 1911 (uncertain, unassessed)
    » Forma Melosira sulcata f. minor Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira sulcata f. multifaria (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. nova Jousé, 1955 (uncertain, unassessed)
    » Forma Melosira sulcata f. permiana Zanon, 1930 (uncertain, unassessed)
    » Forma Melosira sulcata f. plana (Ehrenberg; Grunow) F.W. Mills, 1934 (uncertain, unassessed)
    » Forma Melosira sulcata f. plana (Ehernberg; Grunow) F.W. Mills, 1934 (uncertain, unassessed)
    » Forma Melosira sulcata f. plana (Ehrenberg) Peragallo & Peragallo, 1908 (uncertain, unassessed)
    » Forma Melosira sulcata f. polygona (Grunow in Schmidt et al.) Fricke, 1902 (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) Peragallo & Peragallo, 1908 (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) Peragallo & Peragallo, 1908 (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) Peragallo & Peragallo, 1897-1908 (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) F.W. Mills, 1934 (uncertain, unassessed)
    » Forma Melosira sulcata f. radiata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. radiolata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. radiolata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. radiolata (Grunow) F.W. Mills, 1934 (uncertain, unassessed)
    » Forma Melosira sulcata f. radiolata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. radiolata (Grunow) (uncertain, unassessed)
    » Forma Melosira sulcata f. siberica (Schmidt in Schmidt et al.) Hanna, 1969 (uncertain, unassessed)
    » Forma Melosira sulcata f. siberica Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
    » Forma Melosira sulcata f. siberica Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira sulcata var. acuminatus Gleser & Jousé, 1974 (uncertain, unassessed)
    » Variety Melosira sulcata var. biseriata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira sulcata var. biseriata auct. non Grunow, 1884 (uncertain, unassessed)
    » Variety Melosira sulcata var. lucida Brun in Brun & Tempère, 1889 (uncertain, unassessed)
    » Variety Melosira sulcata var. minor Tempère & Peragallo, 1915 (uncertain, unassessed)
    » Variety Melosira sulcata var. parva Mereschkowsky, 1902 (uncertain, unassessed)
    » Variety Melosira sulcata var. pustulata Petit in Peragallo & Peragallo, 1908 (uncertain, unassessed)
    » Variety Melosira sulcata var. radiata Forti, 1910 (uncertain, unassessed)
    » Variety Melosira sulcata var. scopos Mann, 1907 (uncertain, unassessed)
    » Variety Melosira sulcata var. strigillata Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira taeniata (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella taeniata Ehrenberg, 1854
  » Species Melosira trachealis (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella trachealis Ehrenberg, 1854
  » Species Melosira tympanum (Ehrenberg) Kützing, 1849 represented as Gaillonella tympanum Ehrenberg, 1844
  » Species Melosira valida (Grunow in Van Heurck) Meister, 1912 represented as Melosira crenulata var. valida Grunow, 1882
  » Species Melosira arenaria Moore ex Ralfs, 1843 accepted as Ellerbeckia arenaria (Moore ex Ralfs) R.M.Crawford, 1988 (synonym)
    » Forma Melosira arenaria f. teres (Brun) Tynni, 1982 represented as Melosira teres Brun, 1892
    » Variety Melosira arenaria var. varennarum (M. Peragallo & Heribaud in Heribaud) F.W. Mills, 1934 represented as Melosira varennarum M. Peragallo & Héribaud in Héribaud, 1893
    » Forma Melosira arenaria f. baikalensis Skvortzow, 1937 (uncertain, unassessed)
    » Forma Melosira arenaria f. ornata Skvortzow, 1937 (uncertain, unassessed)
    » Forma Melosira arenaria f. punctata Skvortzow, 1937 (uncertain, unassessed)
    » Variety Melosira arenaria var. arenaria Moore ex Ralfs, 1843 (uncertain, unassessed)
    » Variety Melosira arenaria var. definita Østrup, 1908 (uncertain, unassessed)
    » Variety Melosira arenaria var. fossilis Pantocsek, 1913 (uncertain, unassessed)
    » Variety Melosira arenaria var. granulata Gutwinski, 1890 (uncertain, unassessed)
    » Variety Melosira arenaria var. hungarica Pantocsek, 1889 (uncertain, unassessed)
    » Variety Melosira arenaria var. laevis Héribaud, 1903 (uncertain, unassessed)
    » Variety Melosira arenaria var. nova Yakowleff, 1924 (uncertain, unassessed)
    » Variety Melosira arenaria var. ornata Pantocsek, 1913 (uncertain, unassessed)
    » Variety Melosira arenaria var. tertiaria Pantocsek, 1913 (uncertain, unassessed)
    » Variety Melosira arenaria var. vestita Pantocsek, 1913 (uncertain, unassessed)
  » Species Melosira binderana Kützing, 1844 accepted as Stephanodiscus binderanus (Kützing) Krieger, 1927 (basionym)
    » Variety Melosira binderana var. binderana Kützing, 1844 (uncertain, unassessed)
    » Variety Melosira binderana var. limnetica Bolochonzew (Balachonzew), 1909 (uncertain, unassessed)
  » Species Melosira dendroteres (Ehrenberg) R.Ross, 1947 accepted as Orthoseira dendroteres (Ehrenberg) F.E.Round, R.M.Crawford & D.G.Mann, 1990 (synonym)
  » Species Melosira distans (Ehrenberg) Kützing, 1844 accepted as Aulacoseira distans (Ehrenberg) Simonsen, 1979 † (synonym)
    » Variety Melosira distans var. humilis Cleve-Euler, 1951
    » Forma Melosira distans f. lacustris (Grunow) Bethge represented as Melosira lyrata f. lacustris Grunow in Van Heurck, 1882
    » Forma Melosira distans f. lirata (Ehrenberg) Otto Müller, 1904 represented as Gaillonella lirata Ehrenberg, 1843
    » Forma Melosira distans f. seriata O.Müller represented as Melosira lirata var. seriata Otto Müller, 1898
    » Variety Melosira distans var. laevissima Grunow, 1882 represented as Melosira laevissima Grunow, 1882
    » Variety Melosira distans var. nivalis (W. Smith) Kirchner, 1878 represented as Melosira nivalis W.Smith, 1855
    » Variety Melosira distans var. perglabra (Østrup) E.G.Jorg., 1948 represented as Melosira perglabra Østrup, 1910
    » Variety Melosira distans var. pfaffiana (Reinsch) Grunow in Cleve & Moller, 1878 represented as Melosira pfaffiana Reinsch, 1867
    » Variety Melosira distans var. scalaris (Grunow) O.Müller, 1898 † represented as Melosira scalaris Grunow, 1882 †
    » Variety Melosira distans var. solida (Eulenstein manuscript, Grunow) F.W. Mills, 1934 represented as Melosira solida var. solida Eulenstein in Grunow in Van Heurck, 1882
    » Variety Melosira distans var. tenella (Nygaard) M.-B.Florin, 1981 represented as Melosira tenella Nygaard, 1956
    » Variety Melosira distans var. alpigena Grunow, 1882 accepted as Aulacoseira alpigena (Grunow) Krammer, 1991 (synonym)
    » Forma Melosira distans f. curvata Schimanski, 1973 (uncertain, unassessed)
    » Variety Melosira distans var. africana O.Müller, 1904 (uncertain, unassessed)
    » Variety Melosira distans var. blelhamensis G.Evans, 1964 (uncertain, unassessed)
    » Variety Melosira distans var. capensis Skvortzow, 1946 (uncertain, unassessed)
    » Variety Melosira distans var. densepunctata Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira distans var. helvetica Hustedt, 1943 (uncertain, unassessed)
    » Variety Melosira distans var. imbuta Jurilj, 1957 (uncertain, unassessed)
    » Variety Melosira distans var. limnetica Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira distans var. lirata (Ehrenberg) VanLandingham, 1971 (uncertain, unassessed)
    » Variety Melosira distans var. nivaloides K.E.Camburn, 1986 (uncertain, unassessed)
  » Species Melosira granulata (Ehrenberg) Ralfs, 1861 accepted as Aulacoseira granulata (Ehrenberg) Simonsen, 1979 (synonym)
    » Forma Melosira granulata f. curvata Grunow in Van Heurck, 1882 represented as Melosira granulata var. curvata Grunow in Van Heurck, 1882
    » Variety Melosira granulata var. australiensis (Grunow) Frenguelli, 1923
    » Subspecies Melosira granulata subsp. helvetica (O. Müller) Cleve-Euler, (1911−)1912 accepted as Aulacoseira islandica subsp. helvetica (O.F.Müller) Simonsen, 1979
    » Variety Melosira granulata var. angustissima Otto Müller, 1899 accepted as Aulacoseira granulata var. angustissima (O.F.Müller) Simonsen, 1979 (synonym)
    » Variety Melosira granulata var. granulata accepted as Aulacoseira granulata (Ehrenberg) Simonsen, 1979
    » Forma Melosira granulata f. australiensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira granulata f. curvata F.Ruttner, 1952 (uncertain, unassessed)
    » Forma Melosira granulata f. intermedia Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
    » Forma Melosira granulata f. reticulata Otto Müller, 1903 (uncertain, unassessed)
    » Forma Melosira granulata f. sparsipunctata Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira granulata f. spiralis Hustedt, 1927 (uncertain, unassessed)
    » Forma Melosira granulata f. subtilissima Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira granulata var. arcuata Héribaud, 1902 (uncertain, unassessed)
    » Variety Melosira granulata var. attenuata Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira granulata var. australiensis Tempère & Peragallo in Meister, 1913 (uncertain, unassessed)
    » Variety Melosira granulata var. balatonis Pantocsek, 1902 (uncertain, unassessed)
    » Variety Melosira granulata var. borealis Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira granulata var. boryana Pantocsek, 1903 (uncertain, unassessed)
    » Variety Melosira granulata var. carconensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira granulata var. circinalis Playfair, 1913 (uncertain, unassessed)
    » Variety Melosira granulata var. curvata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira granulata var. decussata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira granulata var. hungarica Pantocsek, 1892 (uncertain, unassessed)
    » Variety Melosira granulata var. islandica (O.Müller) H.Okuno, 1958 (uncertain, unassessed)
    » Variety Melosira granulata var. jeremiae Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira granulata var. jonensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira granulata var. maeotica Pantocsek, 1902 (uncertain, unassessed)
    » Variety Melosira granulata var. maxima Ralfs in Pritchard, 1861 (uncertain, unassessed)
    » Variety Melosira granulata var. pannonica Hajós, 1971 (uncertain, unassessed)
    » Variety Melosira granulata var. reticulata Otto Müller in litt. Lemmermann, 1952 (uncertain, unassessed)
    » Variety Melosira granulata var. spinosa Bolochoncew, 1902 (uncertain, unassessed)
    » Variety Melosira granulata var. tenuis Otto Müller in Lemmrmann, 1952 (uncertain, unassessed)
    » Variety Melosira granulata var. tenuis Frenguelli, 1923 (uncertain, unassessed)
    » Variety Melosira granulata var. tubulosa Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
  » Species Melosira ikapoensis Otto Müller, 1904 accepted as Aulacoseira ikapoensis (Otto Müller) Simonsen, 1979 (synonym)
    » Variety Melosira ikapoensis var. crenulata (Bethge) (uncertain, unassessed)
    » Variety Melosira ikapoensis var. ikapoensis Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira ikapoensis var. minor Cholnoky, 1959 (uncertain, unassessed)
    » Variety Melosira ikapoensis var. minor Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira ikapoensis var. procera Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira juergensi C. Agardh, 1824 accepted as Melosira lineata (Dillwyn) C.Agardh, 1824
  » Species Melosira juergensii C.Agardh, 1824 accepted as Melosira lineata (Dillwyn) C.Agardh, 1824 (synonym)
    » Variety Melosira juergensii var. subangularis Grunow, 1882 (uncertain, unassessed)
  » Species Melosira longispina Hustedt, 1942 accepted as Aulacoseira subarctica var. longispina (Hustedt) A.Tuji & A.Houki, 2004 (synonym)
    » Variety Melosira longispina var. longispina Hustedt in Huber-Pestalozzi, 1942 (uncertain, unassessed)
    » Variety Melosira longispina var. tenuis F.Hustedt, 1942 (uncertain, unassessed)
  » Species Melosira monoliformis (O.F. Müller) C. Agardh, 1824 accepted as Melosira moniliformis (O.F.Müller) C.Agardh, 1824 (misspelling)
  » Species Melosira solida Eulenstein, 1882 accepted as Aulacoseira solida (Eulenstein) K.Krammer, 1991 † (synonym)
    » Variety Melosira solida var. haitiensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira solida var. multiformis Gioacchino Frenguelli, 1933 (uncertain, unassessed)
    » Variety Melosira solida var. nipponica Skvortzow, 1936 (uncertain, unassessed)
    » Variety Melosira solida var. sarsii Gran, 1897 (uncertain, unassessed)
    » Variety Melosira solida var. solida Eulenstein in Grunow in Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira thaitiensis F.S.Castracane degli Antelminelli accepted as Melosira tahitiensis Castracane, 1886 (misspelling)
  » Variety Melosira var. tenella (Nygaard) accepted as Aulacoseira distans var. tenella (Nygaard) R.Ross, 1986 (synonym)
  » Species Melosira westii W.Smith, 1856 accepted as Pseudopodosira westii (W.Smith) Sheshukova-Poretzskaya & Glezer, 1964 † (synonym)
    » Forma Melosira westii f. nuda Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira westii f. parva Brander, 1935 (uncertain, unassessed)
    » Forma Melosira westii f. parva (Brander) Proschkina-Lavrenko, 1949 (uncertain, unassessed)
    » Forma Melosira westii f. pustulata Tempère & Peragallo, 1908 (uncertain, unassessed)
    » Forma Melosira westii f. westii W. Smith, 1856 (uncertain, unassessed)
    » Variety Melosira westii var. genuina Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira westii var. nuda Cleve-Euler, 1935 (uncertain, unassessed)
    » Variety Melosira westii var. pustulata Tempère & Peragallo, 1915 (uncertain, unassessed)
    » Variety Melosira westii var. quadrata Jurilj, 1957 (uncertain, unassessed)
  » Species Melosira accinctus Hohn & Hellerman, 1963 (uncertain, unassessed)
  » Species Melosira aculeifera Scheschukova-Poretzkaya in Scheschukova-Poretzkaya & Moissejeva, 1964 (uncertain, unassessed)
  » Species Melosira adeliae Manguin, 1957 (uncertain, unassessed)
  » Species Melosira aequalis Agardh, 1832 (uncertain, unassessed)
  » Species Melosira africana Leuduger-Fortmorel, 1898 (uncertain, unassessed)
  » Species Melosira agria Pantocsek, 1905 (uncertain, unassessed)
  » Species Melosira akkavaarensis Tynni, 1982 (uncertain, unassessed)
  » Species Melosira albicans Sheshukova, 1961 (uncertain, unassessed)
  » Species Melosira alphabetica Mann, 1937 (uncertain, unassessed)
  » Species Melosira alternans Pouchet, 1893 (uncertain, unassessed)
  » Species Melosira ambigua (Grunow) O.F.Müller (uncertain, unassessed)
    » Forma Melosira ambigua f. ambigua (Grunow in Van Heurck) Otto Müller, 1903 represented as Melosira crenulata var. ambigua Grunow, 1882
    » Forma Melosira ambigua f. altaica Skabichevskij, 1966 (uncertain, unassessed)
    » Forma Melosira ambigua f. curvata A.P.Skabichevskij, 1960 (uncertain, unassessed)
    » Forma Melosira ambigua f. curvata Cheremisinova??, 1968 (uncertain, unassessed)
    » Forma Melosira ambigua f. spiralis Skuja, 1948 (uncertain, unassessed)
    » Forma Melosira ambigua f. spiroides N.A.Chalfina, 1966 (uncertain, unassessed)
    » Variety Melosira ambigua var. alpha Hustedt, 1927 (uncertain, unassessed)
    » Variety Melosira ambigua var. beta Hustedt, 1927 (uncertain, unassessed)
    » Variety Melosira ambigua var. desikacharya Rao & Awasthi, 1963 (uncertain, unassessed)
    » Variety Melosira ambigua var. krishna Rao & Awasthi, 1963 (uncertain, unassessed)
    » Variety Melosira ambigua var. laradura Rao & Awasthi, 1963 (uncertain, unassessed)
    » Variety Melosira ambigua var. puncticulosa (Otto Müller) (uncertain, unassessed)
    » Variety Melosira ambigua var. robusta Gasse, 1980 accepted as Aulacoseira gadebensis (Gasse, 1980) Mohan & Stone, 2016 † (uncertain, unassessed)
    » Variety Melosira ambigua var. variata (Otto Müller) (uncertain, unassessed)
  » Species Melosira americana Kützing, 1844 (uncertain, unassessed)
    » Forma Melosira americana f. americana Kützing, 1844 (uncertain, unassessed)
    » Forma Melosira americana f. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Species Melosira anastomosans Grunow in Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira angustissima Neizvestnova-Zhadina, 1941 (uncertain, unassessed)
  » Species Melosira annularis Eichwald, 1847 (uncertain, unassessed)
  » Species Melosira anormal Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira antarctica Van Heurck, 1909 (uncertain, unassessed)
  » Species Melosira antiqua A.I.Moiseeva, 1963 † accepted as Alveolophora antiqua (A.I.Moisseeva) A.I.Moisseeva, 1990 † (uncertain, homotypic synonym)
  » Species Melosira architecturalis Brun in Schmidt et al., 1892 † (uncertain, unassessed)
  » Species Melosira arctica Dickie, 1852 (uncertain, unassessed)
    » Variety Melosira arctica var. arctica Dickie in litt., Ehrenberg, 1853 (uncertain, unassessed)
    » Variety Melosira arctica var. bornholmiensis Cleve-Euler, 1934 (uncertain, unassessed)
    » Variety Melosira arctica var. krembsii I. Kaczmarska & R. Jahn, 2006 (uncertain, unassessed)
    » Variety Melosira arctica var. subarctica (Otto Müller) (uncertain, unassessed)
  » Species Melosira arcuata Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira arenosa Moore ex Hassall, 1852 (uncertain, unassessed)
  » Species Melosira areolata O.Müller, 1904 (uncertain, unassessed)
  » Species Melosira argus Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira argus f. alpha (uncertain, unassessed)
      » Subforma Melosira argus f. alpha minor Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira argus f. argus Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira argus f. beta (uncertain, unassessed)
      » Subforma Melosira argus f. beta minor Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira argus var. granulosa (Otto Müller) (uncertain, unassessed)
    » Variety Melosira argus var. trimorpha Otto Müller (uncertain, unassessed)
  » Species Melosira arundinacea F.S.Castracane degli Antelminelli (uncertain, unassessed)
    » Forma Melosira arundinacea f. arundinacea Castracane, 1894 (uncertain, unassessed)
    » Forma Melosira arundinacea f. minor Castracane in litt., 1893 (uncertain, unassessed)
  » Species Melosira astridae D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
  » Species Melosira atlymica Rubina, 1962 (uncertain, unassessed)
  » Species Melosira aueri Cleve-Euler, 1948 (uncertain, unassessed)
  » Species Melosira bacillosa Otto Müller, 1903 (uncertain, unassessed)
    » Forma Melosira bacillosa f. peregrina (Otto Müller) (uncertain, unassessed)
    » Forma Melosira bacillosa f. procera (Otto Müller) (uncertain, unassessed)
    » Variety Melosira bacillosa var. bacillosa (Otto Müller) (uncertain, unassessed)
    » Variety Melosira bacillosa var. minor (Otto Müller) (uncertain, unassessed)
  » Species Melosira baicalensis (K.I.Meyer) Wislouch (uncertain, unassessed)
  » Species Melosira bellicosa Héribaud, 1903 (uncertain, unassessed)
  » Species Melosira biharensis Pantocsek, 1886 (uncertain, unassessed)
  » Species Melosira biseriata (Ehrenberg) Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira bituminosa Pantocsek (uncertain, unassessed)
    » Variety Melosira bituminosa var. bituminosa Pantocsek, 1889 (uncertain, unassessed)
    » Variety Melosira bituminosa var. dilatata Pantocsek, 1889 (uncertain, unassessed)
    » Variety Melosira bituminosa var. interrupta Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira biwae Mori, 1974 (uncertain, unassessed)
  » Species Melosira bongrainii M. Peragallo, 1921 (uncertain, unassessed)
  » Species Melosira borreri sensu Wyatt (uncertain, unassessed)
  » Species Melosira bottnica Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
  » Species Melosira boulayana Peragallo in Héribaud, 1902 (uncertain, unassessed)
  » Species Melosira brandinii L.F.Fernandes & R.M.Souza-Mosimann, 2001 (uncertain, unassessed)
  » Species Melosira bruni M.Peragallo & Héribaud-Joseph (uncertain, unassessed)
    » Variety Melosira bruni var. bruni M. Peragallo & Héribaud in Héribaud, 1893 (uncertain, unassessed)
    » Variety Melosira bruni var. sinensis Skvortzow, 1927 (uncertain, unassessed)
  » Species Melosira caliginosa Hanna, 1927 (uncertain, unassessed)
  » Species Melosira campaniensis Moshkovitz, Ehrlich & Soudry, 1983 (uncertain, unassessed)
  » Species Melosira camusi Héribaud-Joseph (uncertain, unassessed)
    » Variety Melosira camusi var. camusi Héribaud, 1903 (uncertain, unassessed)
    » Variety Melosira camusi var. conica Héribaud, 1903 (uncertain, unassessed)
  » Species Melosira canadensis Hustedt, 1952 (uncertain, unassessed)
  » Species Melosira canalifera J.-J.Brun & Héribaud-Joseph (uncertain, unassessed)
    » Variety Melosira canalifera var. anastomosans Héribaud, 1903 (uncertain, unassessed)
    » Variety Melosira canalifera var. canalifera Brun & Héribaud in Héribaud, 1893 (uncertain, unassessed)
  » Species Melosira caputmedusae Pantocsek, 1886 (uncertain, unassessed)
  » Species Melosira carconensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira caspica Henckel, 1909 (uncertain, unassessed)
  » Species Melosira catenata Brun, 1895 (uncertain, unassessed)
  » Species Melosira charcotii M. Peragallo, 1921 (uncertain, unassessed)
  » Species Melosira cincta Pantocsek, 1886 (uncertain, unassessed)
  » Species Melosira circulata (uncertain, unassessed)
    » Variety Melosira circulata var. circulata Akimowa, 1930 (uncertain, unassessed)
    » Variety Melosira circulata var. genuina Akimowa, 1930 (uncertain, unassessed)
  » Species Melosira clavigera Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira clavigera f. abnormal Azpeitia, 1911 (uncertain, unassessed)
    » Forma Melosira clavigera f. clavigera Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira clavigera f. crassiradiata Forti, 1910 (uncertain, unassessed)
    » Forma Melosira clavigera f. doljensis Jurilj, 1957 (uncertain, unassessed)
    » Forma Melosira clavigera f. trinotata Forti, 1910 (uncertain, unassessed)
    » Variety Melosira clavigera var. crassiradiata A.I.Forti (uncertain, unassessed)
    » Variety Melosira clavigera var. minor Cleve-Euler in Cleve-Euler & Hessland, 1948 (uncertain, unassessed)
  » Species Melosira clypeus J. Brun in Brun & Tempère, 1889 (uncertain, unassessed)
  » Species Melosira complexa Lohman, 1948 (uncertain, unassessed)
  » Species Melosira concinna Castracane, 1866 (uncertain, unassessed)
  » Species Melosira constricta Akimova, 1940 (uncertain, unassessed)
  » Species Melosira cornuta Tempère & Brun in Brun & Tempère, 1889 (uncertain, unassessed)
  » Species Melosira coronaria Mann, 1907 (uncertain, unassessed)
  » Species Melosira coronaria M. Peragallo in Peragallo & Peragallo, 1911 (uncertain, unassessed)
  » Species Melosira coronata (Ehrenberg) Kützing (uncertain, unassessed)
  » Species Melosira coronata sensu Kutzing, 1849 (uncertain, unassessed)
  » Species Melosira costata Greville, 1866 (uncertain, unassessed)
  » Species Melosira crassa K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira crenulata Cleve & Möller (uncertain, unassessed)
  » Species Melosira crenulatata (uncertain, unassessed)
    » Variety Melosira crenulatata var. debilis Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira cretacea Jousé, 1951 (uncertain, unassessed)
  » Species Melosira cribrosa Brebisson in W. Smith, 1857 (uncertain, unassessed)
  » Species Melosira cristata Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira crotonensis sensu Wolle, 1890 (uncertain, unassessed)
  » Species Melosira crucicula G.B.De Toni (uncertain, unassessed)
  » Species Melosira crucipunctata Bachmann, 1936 (uncertain, unassessed)
  » Species Melosira csakyana Pantocsek, 1913 (uncertain, unassessed)
  » Species Melosira cucullata Chen, 1980 (uncertain, unassessed)
  » Species Melosira curvatula Janisch in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira cycola Ehrenberg (uncertain, unassessed)
  » Species Melosira dactylus (Ehrenberg) Tempère & Peragallo, 1914 (uncertain, unassessed)
  » Species Melosira davidsonii Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira de vriesii Otto Müller, 1903 (uncertain, unassessed)
    » Forma Melosira de vriesii f. minor Otto Müller, 1903 (uncertain, unassessed)
  » Species Melosira deblockii H.F.Van Heurck (uncertain, unassessed)
    » Variety Melosira deblockii var. deblockii Van Heurck, 1909 (uncertain, unassessed)
    » Variety Melosira deblockii var. punctata Van Heurck, 1909 (uncertain, unassessed)
  » Species Melosira decipiens Grove in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira decussata (Ehrenberg) Kützing (uncertain, unassessed)
  » Species Melosira dendrophila (Ehrenberg) R.Ross & P.A.Sims, 1978 (uncertain, unassessed)
  » Species Melosira densserrae Long, Fuge & Smith, 1946 (uncertain, unassessed)
  » Species Melosira dentata H.L. Smith, 1884 (uncertain, unassessed)
  » Species Melosira denticulata K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira dewildemanii Van Heurck, 1909 (uncertain, unassessed)
  » Species Melosira discigera Agardh, 1824 (uncertain, unassessed)
  » Species Melosira dispersa Carter, 1966 (uncertain, unassessed)
  » Species Melosira dougetii Manguin, 1957 (uncertain, unassessed)
  » Species Melosira dozyana Kützing (uncertain, unassessed)
  » Species Melosira dubia Kützing, 1844 (uncertain, unassessed)
  » Species Melosira duplicata Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira dura Mann, 1925 (uncertain, unassessed)
  » Species Melosira echinata E.E.Manguin (uncertain, unassessed)
    » Forma Melosira echinata f. echinata Manguin, 1941 (uncertain, unassessed)
    » Forma Melosira echinata f. reducta Manguin, 1941 (uncertain, unassessed)
  » Species Melosira echinus Frenguelli, 1938 (uncertain, unassessed)
  » Species Melosira elegans Mukhina in Jousé & Mukhina, 1978 (uncertain, unassessed)
  » Species Melosira elongata Jousé, 1966 (uncertain, unassessed)
  » Species Melosira excentrica Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira excurrens Nygaard, 1956 (uncertain, unassessed)
  » Species Melosira exspectata Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira fausta A.W.F.Schmidt, 1892 † (uncertain, unassessed)
  » Species Melosira fennoscandica Cleve-Euler, 1943 (uncertain, unassessed)
    » Forma Melosira fennoscandica f. crenulata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira fennoscandica f. fennoscandica Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira fennoscandica var. baccata Cleve-Euler, 1943 (uncertain, unassessed)
  » Species Melosira ferox Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira forolivensis Forti in Tempère & Peragallo, 1914 (uncertain, unassessed)
  » Species Melosira fragilis (Roth) Kützing, 1833 (uncertain, unassessed)
  » Species Melosira frigida Jousé, 1959 (uncertain, unassessed)
  » Species Melosira fungiformis Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira gardneri I.Kaczmarska, 1985 † (uncertain, unassessed)
  » Species Melosira garganica Rabenhorst, 1853 (uncertain, unassessed)
  » Species Melosira gelida Cleve, 1883 (uncertain, unassessed)
  » Species Melosira geometrica Hanna, 1932 (uncertain, unassessed)
  » Species Melosira gessneri F.Hustedt, 1965 (uncertain, unassessed)
  » Species Melosira globifera (D.Carmichael) Harvey (uncertain, unassessed)
  » Species Melosira glomus F.C.Castracane degli Antelminelli (uncertain, unassessed)
    » Variety Melosira glomus var. glomus Castracane, 1886 (uncertain, unassessed)
    » Variety Melosira glomus var. major Castracane, 1886 (uncertain, unassessed)
  » Species Melosira godfroyi M. Peragallo, 1921 (uncertain, unassessed)
  » Species Melosira goetzeana O.Müller (uncertain, unassessed)
    » Forma Melosira goetzeana f. goetzeana Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira goetzeana f. tenuiores Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira goetzeana var. tubulosa Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira goretzkyi Tscheremissinova, 1956 (uncertain, unassessed)
  » Species Melosira gothica Cleve-Euler, 1951 (uncertain, unassessed)
  » Species Melosira gowenii Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira grandis Perty, 1852 (uncertain, unassessed)
  » Species Melosira granulata auct. non (Ehrenberg) (uncertain, unassessed)
  » Species Melosira granulata Otto Müller, 1903 (uncertain, unassessed)
  » Species Melosira granulata sensu L.W. Bailey, 1861 (uncertain, unassessed)
  » Species Melosira granulata Otto Müller, 1903 (uncertain, unassessed)
    » Forma Melosira granulata f. granulata (Ehrenberg) Ralfs in Pritchard, 1861 represented as Gaillonella granulata var. granulata Ehrenberg, 1843
    » Forma Melosira granulata f. muzzanensis (Meister) Hustedt, 1930 represented as Melosira muzzanensis Meister, 1912
    » Forma Melosira granulata f. procera (Ehrenberg; Ehrenberg) Grunow in Van Heurck, 1882 represented as Gaillonella procera Ehrenberg, 1842
    » Variety Melosira granulata var. ambigua (Grunow in Van Heurck) Thum, 1885 represented as Melosira crenulata var. ambigua Grunow, 1882
    » Variety Melosira granulata var. bambusina (Petit) De Toni, 1894 represented as Gaillonella granulata var. bambusina Petit, 1890
    » Variety Melosira granulata var. spiralis (Ehrenberg; Ehrenberg) Grunow in Van Heurck, 1882 represented as Gaillonella spiralis Ehrenberg, 1845
    » Variety Melosira granulata var. tenuissima (Grunow in Van Heurck) Forti, 1905 represented as Melosira crenulata var. tenuissima Grunow in Van Heurck, 1882
    » Forma Melosira granulata f. angustissima Otto Müller, 1899 (uncertain, unassessed)
    » Forma Melosira granulata f. curvata Baranov, 1948 (uncertain, unassessed)
    » Forma Melosira granulata f. curvata Hustedt, 1935 (uncertain, unassessed)
    » Forma Melosira granulata f. curvata (Otto Müller) Skabichevskii, 1960 (uncertain, unassessed)
    » Forma Melosira granulata f. curvata Hustedt, 1927 (uncertain, unassessed)
    » Forma Melosira granulata f. curvata Hustedt, 1930 (uncertain, unassessed)
    » Forma Melosira granulata f. delicatula Okuno, 1958 (uncertain, unassessed)
    » Forma Melosira granulata f. depauperata Manguin in Lenoble, 1948 (uncertain, unassessed)
    » Forma Melosira granulata f. depauperata Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira granulata f. epiphytica Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
    » Forma Melosira granulata f. hemicyclus Tempère & Peragallo, 1909 (uncertain, unassessed)
    » Forma Melosira granulata f. inermis Gasse, 1978 (uncertain, unassessed)
    » Forma Melosira granulata f. islandica (Otto Müller) (uncertain, unassessed)
    » Forma Melosira granulata f. jonensis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira granulata f. lineata Gasse, 1980 (uncertain, unassessed)
    » Forma Melosira granulata f. magnipunctata Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira granulata f. magnipunctata Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira granulata f. procera Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira granulata f. procera Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira granulata f. punctata (Otto Müller) Schonfeldt, 1907 (uncertain, unassessed)
    » Forma Melosira granulata f. ranomafanensis Manguin, 1952 (uncertain, unassessed)
    » Forma Melosira granulata f. recta Kisselev, 1930 (uncertain, unassessed)
    » Forma Melosira granulata f. robusta (Okuno) Gasse, 1980 (uncertain, unassessed)
    » Forma Melosira granulata f. tenella Okuno, 1958 (uncertain, unassessed)
    » Forma Melosira granulata f. tenerrima Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira granulata f. tenuipuctata Manguin, 1949 (uncertain, unassessed)
    » Forma Melosira granulata f. typica Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira granulata f. valida Hustedt, 1935 (uncertain, unassessed)
    » Forma Melosira granulata f. vanernsis (Cleve-Euler) Okuno, 1963 (uncertain, unassessed)
    » Variety Melosira granulata var. affinis Ostenfeld, 1908 (uncertain, unassessed)
    » Variety Melosira granulata var. agassizi VanLandingham, 1964 (uncertain, unassessed)
    » Variety Melosira granulata var. alpha Otto Müller, 1903 (uncertain, unassessed)
    » Variety Melosira granulata var. antanifotsyna Manguin, 1949 (uncertain, unassessed)
    » Variety Melosira granulata var. argus (Otto Müller) (uncertain, unassessed)
    » Variety Melosira granulata var. armata 'Héribaud' according to Mills (uncertain, unassessed)
    » Variety Melosira granulata var. baikalensis (Wislouch) (uncertain, unassessed)
    » Variety Melosira granulata var. beta Otto Müller, 1903 (uncertain, unassessed)
    » Variety Melosira granulata var. gamma Otto Müller, 1903 (uncertain, unassessed)
    » Variety Melosira granulata var. goetzeana (Otto Müller) (uncertain, unassessed)
    » Variety Melosira granulata var. helvetica (Cleve-Euler) (uncertain, unassessed)
    » Variety Melosira granulata var. helvetica (Otto Müller) Cleve-Euler, 1911 (uncertain, unassessed)
    » Variety Melosira granulata var. hemicyclus Tempère & Peragallo, 1915 (uncertain, unassessed)
    » Variety Melosira granulata var. jonesiana Cleve, 1898 (uncertain, unassessed)
    » Variety Melosira granulata var. lineolata (Grunow in Van Heurck; Cleve in Schmidt et al.) (uncertain, unassessed)
    » Variety Melosira granulata var. lineolata (Grunow) (uncertain, unassessed)
    » Variety Melosira granulata var. magnusii (Otto Müller) (uncertain, unassessed)
    » Variety Melosira granulata var. maxima Ehrenberg, 1853 (uncertain, unassessed)
    » Variety Melosira granulata var. mbasiensis (Otto Müller) (uncertain, unassessed)
    » Variety Melosira granulata var. mutabilis (Otto Müller) Schonfeldt, 1907 (uncertain, unassessed)
    » Variety Melosira granulata var. nyassensis (Otto Muller; Otto Muller) (uncertain, unassessed)
    » Variety Melosira granulata var. procera Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira granulata var. pyxis (Otto Müller) (uncertain, unassessed)
    » Variety Melosira granulata var. robusta Okuno in Helmcke-Krieger, 1964 accepted as Aulacoseira haruoi (Okuno) Mohan & Stone, 2016 † (uncertain, unassessed)
    » Variety Melosira granulata var. spinosa Schröder, 1897 (uncertain, unassessed)
    » Variety Melosira granulata var. spiroides Grunow (uncertain, unassessed)
    » Variety Melosira granulata var. valvis-ovatis Grunow, 1884 (uncertain, unassessed)
  » Species Melosira granulata Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira granulata Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira granulosa O.Müller (uncertain, unassessed)
  » Species Melosira grovei Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira guillauminii Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Species Melosira haradaae Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira helvetica (O.F.Müller) Cleve-Euler, 1911 (uncertain, unassessed)
  » Species Melosira helvetica Ailio, 1915 (uncertain, unassessed)
  » Species Melosira heribaudii Brun in A. Schmidt, 1893 (uncertain, unassessed)
  » Species Melosira herzogii Lemmermann (uncertain, unassessed)
    » Variety Melosira herzogii var. herzogii Lemmermann, 1910 (uncertain, unassessed)
    » Variety Melosira herzogii var. minor Hohn, 1966 (uncertain, unassessed)
    » Variety Melosira herzogii var. tenuis Lemmermann, 1910 (uncertain, unassessed)
  » Species Melosira hetrurica Kützing, 1844 (uncertain, unassessed)
  » Species Melosira heufleri G.G.A.Meneghini (uncertain, unassessed)
  » Species Melosira hibschii Reichelt, 1897-1900 (uncertain, unassessed)
  » Species Melosira hispanica Hajós, 1982 (uncertain, unassessed)
  » Species Melosira hispida H. Peragallo, 1888 (uncertain, unassessed)
  » Species Melosira hispida C.Janisch (uncertain, unassessed)
  » Species Melosira hispida sensu Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira hokkaidoana Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira hummii Hustedt, 1955 (uncertain, unassessed)
  » Species Melosira hungarica Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira hungarica Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira hustedti Krasske, 1939 (uncertain, unassessed)
  » Species Melosira hyalina Sypniewsky, 1860 (uncertain, unassessed)
  » Species Melosira hyalina Castracane, 1886 (uncertain, unassessed)
  » Species Melosira hyalina Karsten, 1905 (uncertain, unassessed)
  » Species Melosira hyalina K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira hyalinula De Toni, 1894 (uncertain, unassessed)
  » Species Melosira hyperborea Grunow, 1882 (uncertain, unassessed)
  » Species Melosira ignota Rubina, 1962 (uncertain, unassessed)
  » Species Melosira imperfecta Héribaud, 1903 (uncertain, unassessed)
  » Species Melosira incertum Leuduger-Fortmorel, 1898 (uncertain, unassessed)
  » Species Melosira incompta Mann, 1925 (uncertain, unassessed)
  » Species Melosira incorrupta Carter, 1966 (uncertain, unassessed)
  » Species Melosira inordinata Lohman & Andrews, 1968 (uncertain, unassessed)
  » Species Melosira interrupta Lohman & Andrews, 1968 (uncertain, unassessed)
  » Species Melosira irregularis Pantocsek, 1889 (uncertain, unassessed)
    » Variety Melosira irregularis var. chankensis Jousé, 1952 (uncertain, unassessed)
    » Variety Melosira irregularis var. irregularis Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira islandica O.F.Müller, 1906 (uncertain, unassessed)
  » Species Melosira islandica Cleve-Euler, 1938 (uncertain, unassessed)
    » Forma Melosira islandica f. curvula Baranov, 1948 (uncertain, unassessed)
    » Forma Melosira islandica f. helvetica Otto Müller, 1906 (uncertain, unassessed)
    » Forma Melosira islandica f. islandica Otto Müller, 1906 (uncertain, unassessed)
    » Forma Melosira islandica f. spiralis Saks & Antonov, 1945 (uncertain, unassessed)
    » Forma Melosira islandica f. tenuis Otto Müller, 1906 (uncertain, unassessed)
    » Variety Melosira islandica var. baicalensis Meyer, 1916 (uncertain, unassessed)
    » Variety Melosira islandica var. coronata Wislouch, 1924 (uncertain, unassessed)
    » Variety Melosira islandica var. curvata Juravleva, 1936 (uncertain, unassessed)
    » Variety Melosira islandica var. helvetica (Otto Müller) Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira islandica var. helvetica (Otto Müller) Meister, 1912 (uncertain, unassessed)
    » Variety Melosira islandica var. procera Poretzky, 1925 (uncertain, unassessed)
    » Variety Melosira islandica var. typica Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira islandica var. vänernsis (Cleve-Euler) Cleve-Euler, 1951 (uncertain, unassessed)
  » Species Melosira italica (Ehrenberg) Kützing, 1844 (uncertain, unassessed)
    » Variety Melosira italica var. valida (Grunow) Husted, 1927
    » Forma Melosira italica f. crenulata (Ehrenberg) Otto Müller, 1906 represented as Gaillonella crenulata var. crenulata Ehrenberg, 1843
    » Forma Melosira italica f. laevis (Ehrenberg) Cleve-Euler, 1915 represented as Gaillonella laevis Ehrenberg, 1854
    » Forma Melosira italica f. tenuissima (Grunow) Camburn, 1986 represented as Melosira crenulata var. tenuissima Grunow in Van Heurck, 1882
    » Variety Melosira italica var. alpigena (Grunow) Cleve-Euler, 1934 represented as Melosira distans f. alpigena Grunow in Van Heurck, 1882
    » Variety Melosira italica var. ambigua (Grunow) Cleve-Euler, 1951 represented as Melosira crenulata var. ambigua Grunow, 1882
    » Variety Melosira italica var. crenulata (Ehrenberg) Kützing, 1843 represented as Gaillonella crenulata var. crenulata Ehrenberg, 1843
    » Variety Melosira italica var. laevis (Ehrenberg) Frenguelli, 1933 represented as Gaillonella laevis Ehrenberg, 1854
    » Variety Melosira italica var. semilaevis (Grunow in Van Heurck) Frenguelli, 1933 represented as Melosira semilaevis Grunow in Van Heurck, 1882
    » Variety Melosira italica var. valida Grunow, 1881
    » Subspecies Melosira italica subsp. subarctica Otto Müller, 1906 accepted as Aulacoseira subarctica (Otto Müller) E.Y.Haworth, 1990
    » Variety Melosira italica var. tenuissima (Grunow) O.Müller. accepted as Aulacoseira italica var. tenuissima (Grunow) Simonsen, 1979
    » Forma Melosira italica f. laevis A. Berg, 1945 (uncertain, unassessed)
    » Forma Melosira italica f. miocenica Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira italica f. procera Otto Müller, 1906 (uncertain, unassessed)
    » Forma Melosira italica f. recta Otto Müller, 1906 (uncertain, unassessed)
    » Forma Melosira italica f. spiralis Otto Müller, 1906 (uncertain, unassessed)
    » Forma Melosira italica f. tenuis Otto Müller, 1906 (uncertain, unassessed)
    » Forma Melosira italica f. variestriata A. Berg, 1945 (uncertain, unassessed)
    » Variety Melosira italica var. hankensis Skvortzow, 1929 (uncertain, unassessed)
    » Variety Melosira italica var. multistriata Patrick, 1940 (uncertain, unassessed)
    » Variety Melosira italica var. pachyderma Krieger, 1929 (uncertain, unassessed)
    » Variety Melosira italica var. perminuta Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira italica var. plicatella Otto Müller, 1904 (uncertain, unassessed)
    » Variety Melosira italica var. subborealis Nygaard, 1956 (uncertain, unassessed)
  » Species Melosira italica Komarenko, 1956 (uncertain, unassessed)
  » Species Melosira italica Hustedt, 1942 (uncertain, unassessed)
  » Species Melosira italica Otto Müller, 1906 (uncertain, unassessed)
  » Species Melosira italica Otto Müller, 1906 (uncertain, unassessed)
  » Species Melosira japonica Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira japonica F.Meister, 1913 (uncertain, unassessed)
  » Species Melosira jenyssejana Henckel, 1926 (uncertain, unassessed)
  » Species Melosira johnesii Meyer, 1925 (uncertain, unassessed)
  » Species Melosira juergensii sensu Vanhoffen, 1897 (uncertain, unassessed)
    » Forma Melosira juergensii f. subangularis (Grunow) Skabichevskii, 1960 represented as Melosira juergensii var. subangularis Grunow, 1882
    » Forma Melosira juergensii f. genuina Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira juergensii var. caspica Henckel, 1909 (uncertain, unassessed)
    » Variety Melosira juergensii var. juergensii Agardh, 1824 (uncertain, unassessed)
    » Variety Melosira juergensii var. octagona Grunow in Van Heurck, 1885 (uncertain, unassessed)
  » Species Melosira jüergensii (uncertain, unassessed)
  » Species Melosira jurgensii Kützing (uncertain, unassessed)
  » Species Melosira jutlandica Grunow (uncertain, unassessed)
  » Species Melosira kamtschatica Grunow ex Cleve & Moller, 1877 (uncertain, unassessed)
  » Species Melosira karelica Mölder, 1951 (uncertain, unassessed)
  » Species Melosira karsteni Mangin, 1915 (uncertain, unassessed)
  » Species Melosira kochii Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira kondeensis Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira labuensis Cleve, 1883 (uncertain, unassessed)
  » Species Melosira lacustris Chase, 1886 (uncertain, unassessed)
  » Species Melosira laevis (Ehrenberg) J.Ralfs (uncertain, unassessed)
  » Species Melosira laevissima Grunow, 1882 (uncertain, unassessed)
  » Species Melosira lauterbornii Pantocsek, 1908 (uncertain, unassessed)
  » Species Melosira lineata (Dillwyn) C.Agardh, 1824 (uncertain, unassessed)
    » Variety Melosira lineata var. subangularis (Grunow) M.Aboal, 2003 represented as Melosira juergensii var. subangularis Grunow, 1882
    » Variety Melosira lineata var. genuina Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira lineata var. lineata (Dillwyn) Agardh, 1824 (uncertain, unassessed)
    » Variety Melosira lineata var. octogona (Grunow) Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira lineata var. patagonica Otto Müller, 1909 (uncertain, unassessed)
    » Variety Melosira lineata var. robusta (Heribaud) (uncertain, unassessed)
  » Species Melosira lineolata sensu Grunow, 1884 (uncertain, unassessed)
    » Variety Melosira lineolata var. lineolata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira lineolata var. patagonica Otto Müller, 1909 (uncertain, unassessed)
    » Variety Melosira lineolata var. robusta Héribaud, 1903 (uncertain, unassessed)
  » Species Melosira lirata (Ehrenberg) Kützing, 1844 (uncertain, unassessed)
    » Variety Melosira lirata var. lacustris Grunow, 1882
    » Forma Melosira lirata f. biseriata (Grunow) Camburn in Camburn & Kingston, 1986 represented as Melosira lyrata var. biseriata Grunow in Van Heurck, 1882
    » Forma Melosira lirata f. lirata (Ehrenberg) Kützing, 1844 represented as Gaillonella lirata Ehrenberg, 1843
    » Variety Melosira lirata var. perglabra (Østrup) M.-B.Florin, 1981 represented as Melosira perglabra Østrup, 1910
    » Variety Melosira lirata var. biseriata Grunow in Van Heurck, 1882 accepted as Aulacoseira lirata var. biseriata (Grunow) E.Y.Haworth, 1988
    » Forma Melosira lirata f. multiseriata Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira lirata f. seriata Otto Müller (uncertain, unassessed)
    » Variety Melosira lirata var. genuina Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira lirata var. seriata Otto Müller, 1898 (uncertain, unassessed)
  » Species Melosira loczyi Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira lolia Hanna, 1927 (uncertain, unassessed)
  » Species Melosira lucida Cleve-Euler, 1939 (uncertain, unassessed)
  » Species Melosira lyrata Grunow in A. Schmidt, 1893 (uncertain, unassessed)
  » Species Melosira madagascariensis Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira magnusii Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira major Grove in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira mareei Kufferath, 1956 (uncertain, unassessed)
  » Species Melosira margarita K.E. Lohman, 1957 (uncertain, unassessed)
    » Variety Melosira margarita var. laevis K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira marginata Hajós, 1968 (uncertain, unassessed)
    » Variety Melosira marginata var. marginata Hajós, 1959 (uncertain, unassessed)
    » Variety Melosira marginata var. spinosa Hajós, 1968 (uncertain, unassessed)
  » Species Melosira mauryana Héribaud-Joseph (uncertain, unassessed)
    » Variety Melosira mauryana var. granulosa Héribaud, 1908 (uncertain, unassessed)
    » Variety Melosira mauryana var. mauryana Héribaud, 1908 (uncertain, unassessed)
  » Species Melosira mbasiensis Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira mediterranea Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira mediterranea var. gelida Cleve, 1883 (uncertain, unassessed)
    » Variety Melosira mediterranea var. mediterranea Grunow ex Cleve & Moller, 1878 (uncertain, unassessed)
  » Species Melosira medusa Mann, 1907 (uncertain, unassessed)
  » Species Melosira melinitica Pantocsek, 1886 (uncertain, unassessed)
  » Species Melosira mexicana Grunow ex Cleve & Möller, 1878 (uncertain, unassessed)
  » Species Melosira micropunctata K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira mikkelsenii Nygaard, 1956 (uncertain, unassessed)
  » Species Melosira miniliformis (uncertain, unassessed)
    » Forma Melosira miniliformis f. subglobosa (Grunow) Skabichevskii, 1960 (uncertain, unassessed)
  » Species Melosira minima Hajós, 1968 (uncertain, unassessed)
  » Species Melosira minuta Héribaud, 1903 (uncertain, unassessed)
  » Species Melosira minutula F.J.Chauvin (uncertain, unassessed)
  » Species Melosira miocaenica E.A.Cheremisinova (uncertain, unassessed)
    » Forma Melosira miocaenica f. curvata Tscheremissinova, 1956 (uncertain, unassessed)
    » Forma Melosira miocaenica f. miocaenica Tscheremissinova, 1956 (uncertain, unassessed)
  » Species Melosira mirabilis Brun in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira moisseevae Lupikina, 1984 (uncertain, unassessed)
  » Species Melosira moniliformis (O.F.Müller) C.Agardh, 1824 (uncertain, unassessed)
    » Variety Melosira moniliformis var. australis (M. Peragallo) F.W. Mills, 1934 represented as Melosira borrerii var. australis M. Peragallo, 1921
    » Variety Melosira moniliformis var. hispidum (Castracane; Castracane ex Petit; Grunow in Van Heurck) Zimmermann, 1915 represented as Melosira borreri var. hispida Castracane, 1878
    » Variety Melosira moniliformis var. subglobosa (Grunow) Hustedt, 1927 represented as Melosira borreri var. subglobosa Grunow, 1878
    » Forma Melosira moniliformis f. applanata (Schmidt in Schmidt et al.) (uncertain, unassessed)
    » Forma Melosira moniliformis f. minor W. West, 1912 (uncertain, unassessed)
    » Forma Melosira moniliformis f. moniliformis (O. F. Muller) Agardh, 1824 (uncertain, unassessed)
    » Forma Melosira moniliformis f. octogona (Grunow) Skabichevskii, 1960 (uncertain, unassessed)
    » Variety Melosira moniliformis var. australis (Peragallo) Manguin, 1960 (uncertain, unassessed)
    » Variety Melosira moniliformis var. bottnica (Grunow in Cleve & Möller) (uncertain, unassessed)
    » Variety Melosira moniliformis var. ignimontana (Brun & Heribaud in Heribaud) (uncertain, unassessed)
    » Variety Melosira moniliformis var. major Agardh, 1832 (uncertain, unassessed)
    » Variety Melosira moniliformis var. octogona (Grunow) Hustedt, 1927 (uncertain, unassessed)
  » Species Melosira monospina (uncertain, unassessed)
    » Variety Melosira monospina var. monospina Gasse, 1980 (uncertain, unassessed)
  » Species Melosira mucosa Manguin, 1915 (uncertain, unassessed)
  » Species Melosira muelleri VanLandingham, 1971 (uncertain, unassessed)
  » Species Melosira muscigena Iwahashi, 1936 (uncertain, unassessed)
  » Species Melosira mutabilis Otto Müller (uncertain, unassessed)
  » Species Melosira muzzanensis Meister, 1912 (uncertain, unassessed)
  » Species Melosira naegeli Ralfs in Pritchard, 1861 (uncertain, unassessed)
  » Species Melosira natans Hilse, 1863 (uncertain, unassessed)
  » Species Melosira neocaledonica Manguin, 1962 (uncertain, unassessed)
  » Species Melosira neocaledonica Kociolek & Reviers (uncertain, unassessed)
  » Species Melosira neogena Pantocsek, 1913 (uncertain, unassessed)
  » Species Melosira neosphaerica VanLandingham, 1971 (uncertain, unassessed)
  » Species Melosira neostriata VanLandingham, 1971 (uncertain, unassessed)
  » Species Melosira nivalis W.Smith, 1855 (uncertain, unassessed)
  » Species Melosira nobilis Greville, 1865 (uncertain, unassessed)
  » Species Melosira normannii Arnott in Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira nuda Hajós, 1959 (uncertain, unassessed)
  » Species Melosira nuda K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira nummuloides Greville (uncertain, unassessed)
  » Species Melosira nummuloides W. Smith (uncertain, unassessed)
  » Species Melosira nummuloides sensu Vanhoffen, 1897 (uncertain, unassessed)
  » Species Melosira nummulus A.F.Meunier, 1915 (uncertain, unassessed)
  » Species Melosira numulina Agardh (uncertain, unassessed)
  » Species Melosira nyassensis Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira nyassensis f. bacillosa (Otto Müller) (uncertain, unassessed)
    » Forma Melosira nyassensis f. devriesii (Otto Müller) (uncertain, unassessed)
    » Forma Melosira nyassensis f. minor Otto Müller, 1904 (uncertain, unassessed)
    » Forma Melosira nyassensis f. peregrina Otto Muller, 1904 (uncertain, unassessed)
    » Forma Melosira nyassensis f. procera Otto Muller, 1904 (uncertain, unassessed)
    » Variety Melosira nyassensis var. nyassensis Otto Müller, 1903 (uncertain, unassessed)
    » Variety Melosira nyassensis var. victoriae Otto Müller, 1908 (uncertain, unassessed)
  » Species Melosira nygaardii Camburn, 1986 (uncertain, unassessed)
  » Species Melosira oamaruensis Grove & Sturt, 1887 (uncertain, unassessed)
  » Species Melosira ochracea (A.W.Roth) J.Ralfs (uncertain, unassessed)
  » Species Melosira octogona A.W.F.Schmidt, 1893 (uncertain, unassessed)
  » Species Melosira oculus (Ehrenberg) Kützing (uncertain, unassessed)
  » Species Melosira oculuschamaeleontis Ehernberg, 1844 (1845) (uncertain, unassessed)
  » Species Melosira oestrupi Cleve-Euler, 1910 (uncertain, unassessed)
  » Species Melosira omma Cleve (uncertain, unassessed)
    » Variety Melosira omma var. omma Cleve, 1885 (uncertain, unassessed)
    » Variety Melosira omma var. polaris M. Peragallo, 1921 (uncertain, unassessed)
  » Species Melosira orbifera Brun in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira ordinata (Kützing) (uncertain, unassessed)
  » Species Melosira orichalcea (Mertens ex Jürgens) Kützing, 1833 (uncertain, unassessed)
  » Species Melosira orichalcea sensu Brun, 1880 (uncertain, unassessed)
  » Species Melosira ornata auct. non Grunow, 1884 (uncertain, unassessed)
  » Species Melosira ostrupi A. Cleve (uncertain, unassessed)
  » Species Melosira ostrupii Héribaud in Héribaud et al., 1920 (uncertain, unassessed)
  » Species Melosira papilio Mukhina in Jousé & Mukhina, 1978 (uncertain, unassessed)
  » Species Melosira papillifera Hendey, 1972 (uncertain, unassessed)
  » Species Melosira patera J.A. Long, D.P. Fuge & J. Smith, 1946 (uncertain, unassessed)
  » Species Melosira paucipunctata K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira pella Lohman & Andrews, 1968 (uncertain, unassessed)
  » Species Melosira pensacolae Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira peragalloii Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira perglabra Østrup, 1910 (uncertain, unassessed)
    » Variety Melosira perglabra var. florinae Camburn in Smol, 1986 (uncertain, unassessed)
    » Variety Melosira perglabra var. floriniae Camburn, 1985 (uncertain, unassessed)
  » Species Melosira perpusilla Frenguelli, 1923 (uncertain, unassessed)
  » Species Melosira pethoei (Pantocsek) (uncertain, unassessed)
  » Species Melosira pfaffiana Reinsch, 1867 (uncertain, unassessed)
  » Species Melosira plana (Ehrenberg) Kützing, 1849 (uncertain, unassessed)
  » Species Melosira polaris Grunow, 1884 (uncertain, unassessed)
  » Species Melosira polymopha (uncertain, unassessed)
  » Species Melosira ponderosa K.E. Lohman, 1957 (uncertain, unassessed)
    » Variety Melosira ponderosa var. curta K.E. Lohman, 1957 (uncertain, unassessed)
    » Variety Melosira ponderosa var. elongata K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira pontificalis Brun in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira prae-angustissima Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira prae-angustissima f. curvata Jousé, 1952 (uncertain, unassessed)
  » Species Melosira praeclara Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira praegranulata (uncertain, unassessed)
    » Forma Melosira praegranulata f. curvata Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praegranulata f. curvata Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praegranulata f. minor Vozzhennikova, 1960 (uncertain, unassessed)
    » Forma Melosira praegranulata f. praegranulata Jousé, 1952 (uncertain, unassessed)
    » Variety Melosira praegranulata var. praeangustissima Jousé, 1952 (uncertain, unassessed)
  » Species Melosira praeislandica (uncertain, unassessed)
    » Forma Melosira praeislandica f. curvata (Otto Müller) Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praeislandica f. curvata Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praeislandica f. praeislandica Jousé, 1952 (uncertain, unassessed)
    » Forma Melosira praeislandica f. robusta Tscheremissionva, 1971 (uncertain, unassessed)
    » Variety Melosira praeislandica var. negoroi Tanaka, Matsuoka & Takagi, 1984 (uncertain, unassessed)
    » Variety Melosira praeislandica var. tenuissima Tanaka, Matsuoka & Takagi, 1984 (uncertain, unassessed)
  » Species Melosira praetermissa V.A.Nikolajev, 1965 † (uncertain, unassessed)
  » Species Melosira pseudoamericana Camburn in Camburn & Kingston, 1986 (uncertain, unassessed)
  » Species Melosira pseudogranulata Cleve-Euler, 1948 (uncertain, unassessed)
  » Species Melosira pulchella Hustedt, 1952 (uncertain, unassessed)
  » Species Melosira punctata Grunow in A. Schmidt, 1893 (uncertain, unassessed)
  » Species Melosira puncticulosa Otto Müller, 1903 (uncertain, unassessed)
  » Species Melosira punctissima K.E. Lohman, 1957 (uncertain, unassessed)
    » Variety Melosira punctissima var. curvata K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira punctulosa Bethge, 1925 (uncertain, unassessed)
  » Species Melosira pusilla F.Meister, 1913 (uncertain, unassessed)
  » Species Melosira radiato-sinuata Chen, 1980 (uncertain, unassessed)
    » Variety Melosira radiato-sinuata var. yunnanica Chen, 1980 (uncertain, unassessed)
  » Species Melosira recedens Schmidt in Schmidt, 1892 (uncertain, unassessed)
  » Species Melosira rieufii Héribaud, 1908 (uncertain, unassessed)
  » Species Melosira robusta Hustedt, 1952 (uncertain, unassessed)
    » Variety Melosira robusta var. kokariensis Foged, 1985 (uncertain, unassessed)
  » Species Melosira roeseana Rabenhorst, 1852 (uncertain, unassessed)
    » Variety Melosira roeseana var. epidendron Grunow
    » Variety Melosira roeseana var. spiralis (Ehrenberg) Grunow
    » Variety Melosira roeseana var. xizangensis Chen, 1985
    » Variety Melosira roeseana var. dendroteres (Ehrenberg) Grunow, 1882 represented as Liparogyra dendroteres Ehrenberg, 1848
    » Variety Melosira roeseana var. hamadryas (Ehrenberg) Grunow in Van Heurck, 1882 represented as Stephanosira hamadryas Ehrenberg, 1848
    » Variety Melosira roeseana var. spiralis Grunow represented as Liparogyra spiralis Ehrenberg, 1854
    » Variety Melosira roeseana var. roeseana (Rabenh.) accepted as Aulacoseira epidendron (Ehrenberg) R.M.Crawford, 1981 (synonym)
    » Forma Melosira roeseana f. elongata Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira roeseana f. normalis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira roeseana f. porocyclia Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Forma Melosira roeseana f. spiralis Grunow in Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira roeseana var. asiatica Skvortzow, 1938 (uncertain, unassessed)
    » Variety Melosira roeseana var. groenlandica A. Berg, 1945 (uncertain, unassessed)
    » Variety Melosira roeseana var. indica Skvortzow, 1935 accepted as Melosira indica Skvortzov (uncertain, unassessed)
    » Variety Melosira roeseana var. spinosa Cleve-Euler, 1951 (uncertain, unassessed)
    » Variety Melosira roeseana var. tropica G.Krasske, 1948 (uncertain, unassessed)
    » Variety Melosira roeseana var. typica Grunow in Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira roeseana sensu Schmidt et al., 1893 (uncertain, unassessed)
    » Forma Melosira roeseana f. epidendron (Ehrenberg) Grunow in Van Heurck, 1882 represented as Stephanosira epidendron Ehrenberg, 1848
    » Variety Melosira roeseana var. setosa (Greville) Tempère & Peragallo, 1910 represented as Melosira setosa var. setosa Greville, 1886
    » Forma Melosira roeseana f. curvata Frenguelli, 1953 (uncertain, unassessed)
    » Forma Melosira roeseana f. minor Cleve-Euler, 1951 (uncertain, unassessed)
    » Forma Melosira roeseana f. roeseana Rabenhorst, 1854 (uncertain, unassessed)
    » Forma Melosira roeseana f. spinosa Skvortzow, 1938 (uncertain, unassessed)
    » Variety Melosira roeseana var. dentroteres Van Heurck, 1882 (uncertain, unassessed)
    » Variety Melosira roeseana var. formosana Krasske & Schwabe, 1950 (uncertain, unassessed)
  » Species Melosira rostratis Zakrzewski, 1934 (uncertain, unassessed)
  » Species Melosira royatensis VanLandingham, 1971 (uncertain, unassessed)
  » Species Melosira samoensis Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira sanctae crucis H. Peragallo in Tempère & Peragallo, 1909 (uncertain, unassessed)
  » Species Melosira saratoviana Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira sarmatica Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira saturnalis Brun in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira scabrosa Østrup, 1908 (uncertain, unassessed)
  » Species Melosira scalaris Grunow, 1882 † (uncertain, unassessed)
  » Species Melosira schawoi Pantocsek, 1908 (uncertain, unassessed)
  » Species Melosira schroederi J.Woloszynska (uncertain, unassessed)
    » Variety Melosira schroederi var. minor Woloszynska, 1914 (uncertain, unassessed)
    » Variety Melosira schroederi var. schroederi Woloszynska, 1914 (uncertain, unassessed)
  » Species Melosira scopos Mann, 1907 (uncertain, unassessed)
  » Species Melosira selecta Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira semilaevis Grunow in Van Heurck, 1882 (uncertain, unassessed)
  » Species Melosira separanda A.W.F.Schmidt (uncertain, unassessed)
  » Species Melosira setosa J.R.Carter, 1966 (uncertain, unassessed)
  » Species Melosira siberica A.W.F.Schmidt, 1892 † (uncertain, unassessed)
  » Species Melosira siberica Skabichevskii, 1963 (uncertain, unassessed)
  » Species Melosira similis Hustedt, 1942 (uncertain, unassessed)
  » Species Melosira simplex Mann, 1937 (uncertain, unassessed)
  » Species Melosira sinensis Chen, 1980 (uncertain, unassessed)
  » Species Melosira sol sensu Skvortzow, 1937 (uncertain, unassessed)
  » Species Melosira solitoria Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Species Melosira sparsepunctata Hajós, 1974 (uncertain, unassessed)
  » Species Melosira sphaerica Héribaud, 1903 (uncertain, unassessed)
  » Species Melosira sphaerica Karsten, 1905 (uncertain, unassessed)
  » Species Melosira spinifera Hustedt, 1927 (uncertain, unassessed)
  » Species Melosira spinosa Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira spinosa Greville (uncertain, unassessed)
  » Species Melosira spinuligera M.Peragallo (uncertain, unassessed)
  » Species Melosira spinulosa Hustedt, 1952 (uncertain, unassessed)
  » Species Melosira spiralis (Ehrenberg) Kützing (uncertain, unassessed)
  » Species Melosira steffanssoni Østrup, 1918 (1920) (uncertain, unassessed)
  » Species Melosira strangulata Héribaud, 1908 (uncertain, unassessed)
  » Species Melosira striata Otto Müller, 1904 (uncertain, unassessed)
  » Species Melosira striata M. Peragallo & Héribaud in Héribaud, 1893 (uncertain, unassessed)
    » Variety Melosira striata var. magna Werestschagin, 1930 (uncertain, unassessed)
  » Species Melosira subflexilia Kützing, 1833 (uncertain, unassessed)
  » Species Melosira subflexilis Kützing, 1833 (uncertain, unassessed)
  » Species Melosira subflexilis sensu Schmidt in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira subhyalina Van Heurck, 1909 (uncertain, unassessed)
  » Species Melosira subornata Schmidt in Schmidt et al., 1892 (uncertain, unassessed)
  » Species Melosira subsalsa Cleve-Euler, 1912 (uncertain, unassessed)
  » Species Melosira subsetosa Manguin, 1960 (uncertain, unassessed)
  » Species Melosira subtilis Van Goor, 1924 (uncertain, unassessed)
  » Species Melosira tahitiensis Castracane, 1886 (uncertain, unassessed)
  » Species Melosira tcherniae Manguin, 1960 (uncertain, unassessed)
  » Species Melosira tcherniai Manguin, 1957 (uncertain, unassessed)
  » Species Melosira temperei Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira tenella Nygaard, 1956 (uncertain, unassessed)
  » Species Melosira tenuis Otto Muller ex Lemmermann, 1903 (uncertain, unassessed)
    » Variety Melosira tenuis var. ambigua Grunow ex Cleve & Moller, 1879 (uncertain, unassessed)
    » Variety Melosira tenuis var. mexicana Grunow ex Cleve & Moller, 1878 (uncertain, unassessed)
    » Variety Melosira tenuis var. tenuis Kützing, 1844 (uncertain, unassessed)
  » Species Melosira tenuissima Grunow, 1882 (uncertain, unassessed)
  » Species Melosira teres Brun, 1892 (uncertain, unassessed)
  » Species Melosira thermalis Meneghini, 1845 (uncertain, unassessed)
  » Species Melosira thompsonii Harvey, 1841 (uncertain, unassessed)
  » Species Melosira thrypsia Barron, 1975 (uncertain, unassessed)
  » Species Melosira thumii Pantocsek, 1889 (uncertain, unassessed)
  » Species Melosira timensis Oksiyuk, 1960 (uncertain, unassessed)
  » Species Melosira transitus Carter & Denny, 1987 (uncertain, unassessed)
  » Species Melosira transylvanica Pantocsek, 1892 (uncertain, unassessed)
  » Species Melosira triannula K.E. Lohman, 1957 (uncertain, unassessed)
  » Species Melosira tricostata Gleser in Gleser & Posnova, 1964 (uncertain, unassessed)
  » Species Melosira trimorpha (Otto Müller) (uncertain, unassessed)
  » Species Melosira tropica P.L.Crouan & H.M.Crouan (uncertain, unassessed)
  » Species Melosira truncata E.Grove (uncertain, unassessed)
    » Variety Melosira truncata var. furcata Brun in Schmidt et al., 1893 (uncertain, unassessed)
    » Variety Melosira truncata var. truncata Grove in Schmidt et al., 1893 (uncertain, unassessed)
  » Species Melosira tuberculosa Cleve, 1881 (uncertain, unassessed)
  » Species Melosira tubulata Eichwald, 1860 (uncertain, unassessed)
  » Species Melosira turgida Ehrlich, 1973 (uncertain, unassessed)
  » Species Melosira vangeliana Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Species Melosira vanheurckii M. Peragallo, 1921 (uncertain, unassessed)
  » Species Melosira varennarum M. Peragallo & Héribaud in Héribaud, 1893 (uncertain, unassessed)
  » Species Melosira variabilis McLaughlin in McLaughlin & Stone, 1986 (uncertain, unassessed)
  » Species Melosira variante Agardh, 1832 (uncertain, unassessed)
  » Species Melosira variata Otto Müller (uncertain, unassessed)
  » Species Melosira vetustissima Hajós & Stradner in Hajós, 1974 (uncertain, unassessed)
  » Species Melosira vilida (Grunow) Meister (uncertain, unassessed)
  » Species Melosira vitrea Lohman & Andrews, 1968 (uncertain, unassessed)
  » Species Melosira wildemannii Van Heurck, 1909 (uncertain, unassessed)
  » Species Melosira wrightii O'Meara, 1869 (uncertain, unassessed)
  » Species Melosira yangbajingensis Huang, 1979 (uncertain, unassessed)
  » Species Melosira zachariae Castracane (uncertain, unassessed)
  » Species Melosira zachariasi Castracane, 1894 (uncertain, unassessed)
  » Species Melosira zeileri Grunow in Schmidt et al., 1893 (uncertain, unassessed)
Genus Pseudopodosira A.P. Jousé in A.I. Proschkina-Lavrenko, 1949
  » Species Pseudopodosira bella A.N.Posnova & S.I.Gleser in S.I.Gleser & A.N.Posnova, 1964 †
  » Species Pseudopodosira boltovskoyi Sar, Lavigne, Wetzel, Ector & Sunesen, 2017
  » Species Pseudopodosira aspera (Jousé) Strelnikova, 1974 † represented as Podosira aspera Jousé, 1951
  » Species Pseudopodosira calyciflos (Tempère & Brun) Kanaya, 1963 † represented as Porodiscus calyciflos J.Tempère & J.Brun, 1889 †
  » Species Pseudopodosira corolla (A. Schmidt) Hajós, 1976 represented as Podosira corolla A.W.F.Schmidt, 1889
  » Species Pseudopodosira echinus (Frenguelli) D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 † represented as Melosira echinus Frenguelli, 1938
  » Species Pseudopodosira elegans (Sheshukova-Poretzkaya) Sheshukova-Poretzkaya, 1964 represented as Podosira elegans Sheshukova-Poretzkaya, 1959
    » Variety Pseudopodosira elegans var. convexas Skabichevskii, 1976 (uncertain, unassessed)
  » Species Pseudopodosira hyalina (Jouse in Proschkina-Lavrenko) Vechina, 1961 represented as Podosira hyalina Jousé ex Proschkina-Lavrenko, 1949
  » Species Pseudopodosira modesta (Jousé) Olshtynskaja in Gleser, Makarova, Moisseeva & Nikolaev, 1992 † represented as Podosira modesta Jousé in Proschkina-Lavrenko, 1949
  » Species Pseudopodosira simplex (Jousé) Strelnikova, 1974 † represented as Podosira simpla Jousé in Proschkina-Lavrenko, 1949
  » Species Pseudopodosira westii (W.Smith) Sheshukova-Poretzskaya & Glezer, 1964 † represented as Melosira westii f. westii W. Smith, 1856
  » Species Pseudopodosira wittii (Schulz) Vechina, 1961 represented as Podosira wittii Schulz, 1935
  » Species Pseudopodosira areolata E.M.Vishnevskaya & L.P.Loginova, 1975 † (uncertain, unassessed)
  » Species Pseudopodosira dispersa Sheshukova-Poretzkaya in Sheshukova-Poretzkaya & Gleser, 1964 (uncertain, unassessed)
  » Species Pseudopodosira kosugii Tanimura & Sato, 1997 † (uncertain, unassessed)
  » Species Pseudopodosira marginata Hajós, 1976 (uncertain, unassessed)
  » Species Pseudopodosira mixta Posnova in Gleser & Posnova, 1964 (uncertain, unassessed)
  » Species Pseudopodosira orientalis Sheshukova-Poretzkaya, 1964 (uncertain, unassessed)
  » Species Pseudopodosira pileiformis Jousé in Proschkina-Lavrenko, 1949 † (uncertain, unassessed)
  » Species Pseudopodosira punctata Dolmatova in Dolmatova, Kuklina & Oreshkina, 1984 (uncertain, unassessed)
  » Species Pseudopodosira punctata Strelnikova, 1971 (uncertain, unassessed)
  » Species Pseudopodosira pustulata Skabichevskaya, 1984 (uncertain, unassessed)
  » Species Pseudopodosira reticulata Strelnikova, 1974 † (uncertain, unassessed)
  » Species Pseudopodosira septentrionalis Loseva, 1970 (uncertain, unassessed)
  » Species Pseudopodosira ternata Vechina, 1961 (uncertain, unassessed)
  » Species Pseudopodosira witti (Schulz) Hajós, 1977 (uncertain, unassessed)
Genus Schroederella J. Pavillard, 1913

Genus Gaillionella Bory de Saint-Vincent, 1826 accepted as Gaillonella J.B.M. Bory de Saint-Vincent, 1825 (synonym)
  » Species Gaillionella arctica Ehrenberg, 1853 accepted as Gaillonella arctica (Dickie) Ehrenberg, 1853
  » Species Gaillionella coronata Ehrenberg, 1845 accepted as Gaillonella coronata Ehrenberg, 1845
  » Species Gaillionella crenulata Ehrenberg, 1843 accepted as Aulacoseira crenulata (Ehrenberg) Thwaites, 1848 (synonym)
    » Variety Gaillionella crenulata var. valida Pelletan, 1889 (uncertain, unassessed)
  » Species Gaillionella distans Ehrenberg, 1836 accepted as Aulacoseira distans (Ehrenberg) Simonsen, 1979 † (synonym)
  » Species Gaillionella italica Ehrenberg, 1838 accepted as Aulacoseira italica (Ehrenberg) Simonsen, 1979
  » Species Gaillionella lirata Ehrenberg, 1843 accepted as Gaillonella lirata Ehrenberg, 1843
  » Species Gaillionella sulcata Ehrenberg, 1838 accepted as Paralia sulcata (Ehrenberg) Cleve, 1873
  » Species Gaillionella undulata Ehrenberg, 1840 accepted as Melosira undulata (Ehrenberg) Kützing, 1844
marine
Not documented
Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2020). DiatomBase. Melosiraceae Kützing, 1844, sensu emend.. Accessed at: http://www.diatombase.org/aphia.php?p=taxdetails&id=149041 on 2020-09-30
Date
action
by
2005-03-30 08:52:46Z
created
db_admin

basis of record Round, F.E.; Crawford, R.M.; Mann, D.G. (1990). The diatoms: biology and morphology of the genera. Cambridge University Press: London, UK. ISBN 0-521-363187. 747 pp. (look up in IMIS[details]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
LanguageName 
Japanese メロシーラ科  [details]
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