Achnanthepyla minuta ‘(Grunow) M. Peragallo' VanLandingham, 1967 accepted as
Achnanthepyla minutula (Grunow) Perag., 1921 (taxonomy source)
Achnanthes astridii VanLand., 1967 (original description)
Achnanthes biasolettiana var. fossilis Freng., 1936 † accepted as
Achnanthes biasolettiana Grunow, 1880 accepted as
Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 accepted as
Achnanthes pyrenaica var. pyrenaica Hustedt, 1939 (source of synonymy)
Achnanthes biconfusa VanLandingham, 1967 accepted as
Nupela biconfusa (VanLandingham) C.E.Wetzel & Ector, 2018 (original description)
Achnanthes birugula 'Hohn' VanLandingham, 1967 (taxonomy source)
Achnanthes brevipes var. elliptica (Østrup) Cleve-Euler ex VanLandingham, 1967 accepted as
Achnanthes brevipes f. elliptica Østrup, 1897 (new combination reference)
Achnanthes conchinchinensis ‘M. Peragallo' VanLandingham, 1967 (taxonomy source)
Achnanthes crenulata var. confusa VanLandingham, 1967 (original description)
Achnanthes elata var. curvata ‘Gandhi' VanLandingham, 1967 (taxonomy source)
Achnanthes exigua var. constricta (Torka) Hustedt, 1930 accepted as
Cocconeis exigua var. constricta Torka, 1909 (taxonomy source)
Achnanthes expecta VanLandingham, 1967 (original description)
Achnanthes gibberula f. angustior ‘Grunow ex Van Heurck' VanLandingham, 1967 (taxonomy source)
Achnanthes groenlandica var. oestrupii Cleve-Euler ex VanLandingham, 1967 (original description)
Achnanthes hungarica var. rivularia (Frenguelli) Frenguelli, 1933 (additional source)
Achnanthes inflata var. signata ‘O. Müller' VanLandingham, 1967 (taxonomy source)
Achnanthes juriljii VanLandingham, 1967 (original description)
Achnanthes lanceolata f. typica ‘Meister' VanLandingham, 1967 (taxonomy source)
Achnanthes lanceolata f. ventricosa (Hustedt) Vanlandingham, 1967 accepted as
Achnanthes lanceolata var. ventricosa Hustedt, 1914 (new combination reference)
Achnanthes lanceolata var. intermedia (A.Cleve) accepted as
Achnanthes haynaldii var. intermedia Cleve-Euler in Florin, 1944 (new combination reference)
Achnanthes lapponica var. fennica Cleve-Euler, 1934 accepted as
Cocconeis lapponica var. fennica Cleve-Euler, 1934 (new combination reference)
Achnanthes minuta var. alpestris ‘Brun' VanLandingham, 1967 (taxonomy source)
Achnanthes norvegica Hustedt accepted as
Achnanthes montana var. norvegica Hustedt, 1931 (new combination reference)
Achnanthes ostenii var. mesogongyla Frenguelli, 1933 accepted as
Achnanthes ostenii J.Frenguelli, 1933 (source of synonymy)
Achnanthes ostenii var. parva Frenguelli, 1933 accepted as
Achnanthes ostenii J.Frenguelli, 1933 (source of synonymy)
Achnanthes perturba VanLandingham, 1967 (original description)
Achnanthes repestoides ‘Hohn' VanLandingham, 1967 (taxonomy source)
Achnanthes triconfusa Van Landingham, 1967 (original description)
Achnanthes trijuga ‘Turpin' according to VanLandingham, 1828 (taxonomy source)
Achnanthidium agglutinans ‘Grunow in Cleve & Grunow' VanLandingham, 1880 (taxonomy source)
Achnanthidium brevipes var. angustata ‘(Greville) Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. capensis ‘Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. indica ‘(Brun) Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. intermedia ‘(Kützing) Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. leudugeri ‘(Tempère & Brun in Brun & Tempère) Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. marginata (taxonomy source)
Achnanthidium brevipes var. parvulum (Kützing) Mereschovsky, 1901 accepted as
Achnanthes parvula Kützing, 1844 (taxonomy source)
Achnanthidium brevipes var. pennaeformis ‘(Greville) Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. seriatum ‘(Agardh) Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. subcrenulatum ‘Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium brevipes var. typica ‘Cleve' VanLandingham, 1967 (taxonomy source)
Achnanthidium kuwaitensis ‘Hendey' VanLandingham, 1967 (taxonomy source)
Achnanthidium lanceolatum var. haynaldii (Schaarschmidt) Meister, 1912 accepted as
Planothidium haynaldii (Schaarschmidt) Lange-Bertalot, 1999 (taxonomy source)
Actinocyclus cholnokyi VanLandingham, 1967 (original description)
Actinocyclus yarrensis according to VanLandingham (original description)
Actinoptychus divisus ‘Kisselev' VanLandingham, 1967 (taxonomy source)
Actinoptychus meakinii VanLandingham, 1967 (original description)
Actinoptychus triradiatus ‘(Roper) Ralfs in Pritchard' according to VanLandingham, 1967 accepted as
Actinocyclus triradiatus Roper, 1858 (taxonomy source)
Actinoptychus undulatus var. confusus VanLandingham, 1967 (original description)
Amphiprora cholnokyi var. africana (Cholnoky) VanLandingham, 1967 accepted as
Amphiprora hustedtii var. africana Cholnoky, 1960 (new combination reference)
Amphiprora cholnokyi var. cholnokyi VanLandingham, 1967 (original description)
Amphiprora triconfusa VanLandingham, 1967 (original description)
Amphora advena VanLandingham, 1967 (original description)
Amphora balearica ‘Cleve in Cleve & Möller' VanLandingham, 1967 (taxonomy source)
Amphora coffeaeformis var. araulensis (Héribaud) VanLandingham, 1967 accepted as
Amphora araulensis Héribaud, 1908 (new combination reference)
Amphora libyca var. minor ‘Gutwinski' VanLandingham, 1967 (taxonomy source)
Amphora meisteri VanLandingham, 1967 (original description)
Amphora obtusa var. skvortzowii VanLandingham, 1967 (original description)
Amphora robusta var. tenuissima (Cleve-Euler) VanLandingham, 1967 accepted as
Amphora proteus var. tenuissima Cleve-Euler, 1915 (new combination reference)
Amphora spitzbergenensis VanLandingham, 1967 (original description)
Amphora terroris var. rara (Frenguelli) VanLandingham, 1967 accepted as
Amphora cymbifera var. rara Frenguelli, 1945 † (new combination reference)
Amphora undata ‘Greville' according to VanLandingham, 1967 (taxonomy source)
Amphora veneta f. minor ‘Frenguelli' VanLandingham, 1925 (taxonomy source)
Anomoeoneis polygramma var. platensis Frenguelli, 1945 accepted as
Anomoeoneis costata (Kützing) Hustedt, 1959 accepted as
Navicula costata var. costata Kützing, 1844 (source of synonymy)
Anomoeoneis sculpta f. undulata ‘Frenguelli' VanLandingham, 1967 (taxonomy source)
Anomoeoneis sculpta var. apiculata ‘Frenguelli' VanLandingham, 1967 (taxonomy source)
Anomoeoneis sculpta var. minima ‘Frenguelli' VanLandingham, 1967 (taxonomy source)
Anomoeoneis serians f. brachysira ‘(Brébisson in Rabenhorst) Cleve in Cleve & Möller' according to VanLandingham, 1967 accepted as
Navicula brachysira Brébisson ex Rabenhorst, 1853 (taxonomy source)
Asterionella madagascariensis f. minor ‘Manguin in Bourrelly & Manguin' VanLandingham, 1967 (taxonomy source)
Aulacodiscus gigas ‘Gregory' according to VanLandingham, 1865 (taxonomy source)
Auliscus alienus var. alienus VanLandingham, 1967 (original description)
Auliscus alienus var. tetrameri (Forti ex Laporte & Lefébure) VanLandingham, 1967 accepted as
Pseudauliscus schmidtii var. tetrameri Forti ex Laporte & Lefébure, 1930 (new combination reference)
Auliscus debyi (Leuduger-Fortmorel) VanLandingham, 1967 accepted as
Pseudauliscus debyi Leuduger-Fortmorel, 1879 (new combination reference)
Auliscus diffusus (Rattray) VanLandingham, 1967 accepted as
Pseudauliscus diffusus Rattray, 1888 (new combination reference)
Auliscus hirsutus (Rattray) VanLandingham, 1967 accepted as
Pseudauliscus hirsutus Rattray, 1888 (new combination reference)
Auliscus johnsonianus var. eludens (Rattray) VanLandingham, 1967 accepted as
Pseudauliscus johnsonianus var. eludens Rattray, 1888 (new combination reference)
Auliscus letoniensis (Janisch) VanLandingham, 1967 accepted as
Pseudauliscus letoniensis Janisch in Schmidt et al., 1881 (new combination reference)
Auliscus rotatus (Rattray) VanLandingham, 1967 accepted as
Pseudauliscus rotatus Rattray, 1888 (new combination reference)
Auliscus subreticulatus var. minor ‘Tempère & Peragallo' according to VanLandingham, 1967 (taxonomy source)
Auliscus temperei (Pantocsek) VanLandingham, 1967 accepted as
Pseudocerataulus temperei Pantocsek, 1889 (new combination reference)