Checklist of Great Lakes Diatoms

CHECKLIST OF GREAT LAKES DIATOMS

Provided below is the updated checklist which was published by Stoermer, Kreis and Andresen (1999) in the Journal of Great Lakes Research 25(3):515-566. Taxa as originally reported appear in the main body of the list. If a taxon has a synonym it is linked to the recommended synonym.

Acanthoceras zachariasii (Brun) Simonsen

Achnanthes affinis Grunow
Achnanthes altaica (Poretzky) A.Cleve
Achnanthes amoena Hust.
Achnanthes atacamae Hust.
Achnanthes biasolettiana (Kütz.) Grunow (see note 1)

Psammothidium abundans fo. rosenstockii (Lange-Bert. in Lange-Bert. & Krammer) Bukht.
Achnanthes bioreti Germain
Achnanthes brevipes C. Agardh
Achnanthes brevipes var. intermedia (Kütz.) Cleve
Achnanthes calcar (Cleve) Cleve
Achnanthes clevei Grunow
Achnanthes clevei var. balcanica fo. rostrata Hust.
Achnanthes clevei var. rostrata Hust.
Achnanthes coarctata (Bréb.) Grunow
Achnanthes conspicua A.Mayer
Achnanthes conspicua var. brevistriata Hust.
Achnanthes deflexa C.W.Reimer in Patrick & Reimer
Achnanthes delicatula (Kütz.) Grunow
Achnanthes depressa (Cleve) Hust.
Achnanthes detha Hohn and Hellerm.
Achnanthes didyma Hust.
Achnanthes dispar Cleve
Achnanthes dispar var. angulata Hust.
Achnanthes dispar var. fontellii A.Cleve
Achnanthes duthii Sreen.
Achnanthes elliptica var. elongata A.Cleve
Achnanthes exigua Grunow
Achnanthes exigua var. constricta (Grunow) Hust.
Achnanthes exigua var. heterovalva Krasske
Achnanthes exigua var. heterovalva fo. semiaperta H.Guermeur
Achnanthes exigua var. heterovalvata Krasske [orthographic error]

Achnanthidium affine (Grunow) Czarn.
Achnanthidium biasolettianum (Grunow in Cleve & Grunow) Bukht. & Round
Achnanthidium brevipes var. intermedia (Kütz.) Cleve
Achnanthidium clevei (Grunow in Cleve & Grunow) Czarn.
Achnanthidium clevei var. rostratum (Hust.) M.B.Edlund
Achnanthidium delicatulum Kütz.
Achnanthidium duthii (Sreen.) M.B.Edlund
Achnanthidium exiguum (Grunow) Czarn.
Achnanthidium exiguum var. heterovalvum (Krasske) Czarn.
Achnanthidium exilis (Kütz.) Bukht.
Achnanthidium flexellum (Kütz.) Bréb.
Achnanthidium hungaricum Grunow
Achnanthidium kryophila (J.B.Petersen) Bukht.
Achnanthidium lanceolatum Bréb. in Kütz.
Achnanthidium lanceolatum var. elliptica Cleve
Achnanthidium lanceolatum var. genuinum A.Mayer
Achnanthidium lanceolata var. haynaldii (Schaarsch.) Cleve
Achnanthidium lineare W.Sm.
Achnanthidium microcephalum (Kütz.) vide Rabenh.
Achnanthidium minutissimum (Kütz.) Czarn.
Achnanthidium trinodis Arnott ex Ralfs in Pritchard

Actinocyclus niagarae H.L.Sm.
Actinocyclus normanii (Greg.) Hust.
Actinocyclus normanii fo. subsalsa (Juhl.-Dannf.) Hust.
Actinocyclus normanii var. subsalsa (Juhl.-Dannf.) Hust. [nom. nud.]

Actinoptychus sp.

Amphipleura arctica R.M.Patrick & Freese
Amphipleura delicatissima [nom. illegit.]
Amphipleura kriegeriana (Krasske) Hust.
Amphipleura pellucida (Kütz.) Kütz.
Amphipleura sigmoida W.Sm.

Amphiprora alata (Ehrenb.) Kütz.
Amphiprora calumetica Thomas in Thomas & Chase

Amphora calumetica (Thomas ex Wolle) M.Perag.
Amphiprora ornata J.W.Bail.
Amphiprora paludosa W.Sm.

Amphitropis ornata (J.W.Bail.) Grunow

Amphora bullatoides Hohn & Hellerm.
Amphora calumetica (Thomas in Thomas & Chase) M.Perag.
Amphora coffeaeformis (C.Agardh) Kütz.
Amphora coffeiformis (C.Agardh) Kütz. [orthographic error]
Amphora coffeaeformis var. acutiuscula (Kütz.) Hust.
Amphora coffeiformis var. acutiuscula (Kütz.) Hust. [orthographic error]
Amphora coffeiformis (C.Agardh) Kütz. [orthographic error]
Amphora commutata Grunow
Amphora crucifera A.Cleve
Amphora cruciferoides Stoermer & Yang
Amphora delicatissima Krasske
Amphora exigua Greg.
Amphora fonticola Maill.
Amphora gigas Ehrenb.
Amphora hemicycla Stoermer & Yang
Amphora hemicyla Stoermer & Yang [orthographic error](see note 6)
Amphora huronensis Stoermer & Yang
Amphora inariensis Krammer
Amphora lanceolate var. ? [nom. illegit.]
Amphora libyca Ehrenb.
Amphora michiganensis Stoermer & Yang
Amphora montana Krasske
Amphora neglecta Stoermer & Yang
Amphora normanii Rabenh.
Amphora oligotraphenta Lange-Bert. in Lange-Bertalot & Metzeltin
Amphora ovalis (Kütz.) Kütz.
Amphora ovalis var. affinis (Kütz.) VanHeurck ex DeToni
Amphora ovalis var. affins (Kütz.) Van Heurck [orthographic error]
Amphora ovalis var. constricta Skvortzov
Amphora ovalis var. gracilis (Ehrenb.) Van Heurck
Amphora ovalis var. libyca (Ehrenb.) Cleve
Amphora ovalis var. minor H.H.Chase [nom. illegit.]
Amphora ovalis var. minutissima (W.Sm.) Hurter
Amphora ovalis var. pediculatus (Kütz.) Van Heurck [orthographic error]
Amphora ovalis var. pediculus (Kütz.) Van Heurck ex DeToni
Amphora ovalis var. ? [nom. illegit.]
Amphora ovalis var. b [nom. illegit.]
Amphora ovalis var. ? Kütz. [nom. illegit.]
Amphora ovalis var. nov. [nom. illegit.]
Amphora parallelistriata Mang.
Amphora perpusilla (Grunow) Grunow
Amphora rotunda Skvortzov
Amphora sibirica Skvortzov & Meyer
Amphora subcostulata Stoermer & Yang
Amphora submontana Hust. (see note 7)
Amphora tenuistriata Mang. in Bourr. & Mang.
Amphora thumensis (Mayer) A.Cleve
Amphora veneta Kütz.
Amphora veneta var. angularis [nom. nud.]
Amphora veneta var. capitata Haworth

Aneumastus minor (Hust.) Lange-Bert.
Aneumastus stroesei (Østrup) D.G.Mann in Round, Crawford & Mann
Aneumastus tusculus (Ehrenb.) D.G.Mann & Stickle in Round, Crawford & Mann

Anomoeoneis costata (Kütz.) Hust.
Anomoeoneis exilis Kütz.
Anomoeoneis follis (Ehrenb.) Cleve
Anomoeoneis sculpta (Ehrenb.) O.Müll.
Anomoeoneis serians (Bréb.) Cleve
Anomoeoneis serians var. brachysira (Bréb.) Hust.
Anomoeoneis sphaerophora (Ehrenb.) Pfitz.
Anomoeoneis sphaerophora fo. costata (Kütz.) A.M.Schmid
Anomoeoneis sphaerophora var. sculpta O.Müll.
Anomoeoneis styriaca (Grunow) Hust.
Anomoeoneis vitrea (Grunow) Ross in Patrick & Reimer
Anomoeoneis zellensis (Grunow) Cleve
Anomoeoneis zellensis fo. difficilis (Grunow) Hust.

Asterionella bleakeleyi W.Sm.
Asterionella falfsii W.Sm. [orthographic error]
Asterionella formosa Hass.
Asterionella formosa var. acaroides Lemm.
Asterionella formosa var. gracillima (Hantzsch) Grunow in VanHeurck
Asterionella formosa var. subtilis Grunow
Asterionella gracillima (Hantzsch) Heib.
Asterionella ralfsii W.Sm.

Attheya zachariasii Brun

Aulacosira granulata (Ehrenb.) Simonsen [orthographic error]
Aulacosira granulata var. angustissima (O.Müll.) Simonsen [orthographic error]
Aulacosira islandica (O.Müll.) Simonsen [orthographic error]
Aulacosira italica (Ehrenb.) Simonsen [orthographic error]
Aulacosira italica subsp. subarctica (O.Müll.) Simonsen [orthographic error]

Bacillaria paradoxaGmelin
Bacillaria paxillifer (O.F.Müll.) Hendy

Biddulphia laevis Ehrenb.

Brachysira exilis (Kütz.) Round & D.G.Mann
Brachysira follis (Ehrenb.) Ross in Hartley
Brachysira brebissonii Ross in Hartley
Brachysira serians (Bréb. ex Kütz.) Round & D.G.Mann
Brachysira sphaerophora (Kütz.) Round ex D.G.Mann [transfer invalid](see note 8)

Anomoeoneis sphaerophora (Kütz.) Pfitz.
Brachysira styriaca (Grunow in VanHeurck) Ross in Hartley
Brachysira vitrea (Grunow) Ross in Hartley
Brachysira zellensis (Grunow) Round & D.G.Mann
Brachysira zellensis fo. difficilis (Grunow in VanHeurck) Hamilton

Caloneis alpestris (Grunow) Cleve
Caloneis amphisbaena (Bory) Cleve
Caloneis bacillaris (Greg.) Cleve
Caloneis bacillaris var. thermalis (Grunow) A.Cleve
Caloneis bacillum (Grunow) Cleve
Caloneis bacillum var. fontinalis Hust.
Caloneis bacillum var. lancettula (Schulz) Hust.
Caloneis clevei (Lagerst.) Cleve
Caloneis clevei var. undulata Krasske
Caloneis fontinalis (Grunow) Lange-Bert. & Reichardt in Lange-Bertalot & Metzeltin
Caloneis formosa Greg.
Caloneis hyalina Hust.
Caloneis lamella Zakrz.
Caloneis lancettula (Schulz) Lange-Bert. & Witkowski in Lange-Bertalot & Metzeltin
Caloneis leptosoma (Grunow) Krammer in Krammer & Lange-Bert.
Caloneis lewisii R.M.Patrick
Caloneis liber (W.Sm.) Cleve
Caloneis limosa (Kütz.) R.M.Patrick
Caloneis limosa var. gibberula (Kütz.) Grunow
Caloneis limosa var. subinflata Grunow
Caloneis limosa var. undulata Grunow
Caloneis molaris (Grunow) Krammer in Krammer & Lange-Bert.
Caloneis nubicola (Grunow) Cleve
Caloneis pulchra Messik.
Caloneis pulchra var. interrupta Gandhi
Caloneis schumanniana (Grunow) Cleve
Caloneis schumanniana var. biconstricta Grunow
Caloneis schumanniana var. lancettula Hust.
Caloneis silicula (Ehrenb.) Cleve
Caloneis silicula var. inflata (Grunow) Cleve
Caloneis silicula var. limosa (Kütz.) VanLand.
Caloneis silicula var. undulata (Grunow) Cleve
Caloneis silicula var. truncatula (Grunow) Cleve
Caloneis silicula var. tumida Hust.
Caloneis silicata var. tumida Hust. [nom. nud.]
Caloneis tenuis (Greg.) Krammer in Krammer & Lange-Bert.
Caloneis undulata (Greg.) Krammer in Krammer & Lange-Bert.
Caloneis ventricosa (Ehrenb.) F.Meister
Caloneis ventricosa var. minuta (Grunow) R.M.Patrick
Caloneis ventricosa var. truncatula (Grunow) F.Meister
Caloneis ventricosa var. trunculata [orthographic error]

Campylodiscus clypeus Ehrenb.
Campylodiscus cribrosus W.Sm.
Campylodiscus decorus Bréb.
Campylodiscus echensis Ehrenb.
Campylodiscus hibernicus Ehrenb.
Campylodiscus hibernicus var. ? [nom. illegit.]
Campylodiscus noricus Ehrenb.
Campylodiscus noricus var. hibernica (Ehrenb.) Grunow [orthographic error]
Campylodiscus noricus var. hibernicus (Ehrenb.) Grunow

Capartogramma crucicula (Grunow) Ross

Catacombus gaillonii (Bory) D.M.Williams & Round

Cavinula cocconeiformis (Greg. ex Grev.) D.G.Mann & Stickle in Round, Crawford & Mann
Cavinula intractata (Hust.) Lange-Bert. in Lange-Bert. & Metzeltin
Cavinula jaernefeltii (Hust.) D.G.Mann & Stickle in Round, Crawford & Mann
Cavinula lacustris (Greg.) D.G.Mann & Stickle in Round, Crawford & Mann
Cavinula pseudoscutiformis (Hust.) D.G.Mann & Stickle in Round, Crawford & Mann
Cavinula scutelloides (W.Sm.) Lange-Bert. in Lange-Bert. & Metzeltin
Cavinula scutiformis (Grunow ex A.Schmidt) D.G.Mann & Stickle in Round, Crawford & Mann
Cavinula variostriata (Krasske) D.G.Mann & Stickle in Round, Crawford & Mann

Ceratoneis arcus (Ehrenb.) Kütz. (see note 9)
Ceratoneis arcus var. amphioxys (Rabenh.) Brun

Chamaepinnularia begeri (Krasske) Lange-Bert.
Chamaepinnularia soehrensis (Krasske) Lange-Bert.
Chamaepinnularia mediocris (Krasske) Lange-Bert.
Chamaepinnularia evanida (Hust.) Lange-Bert.

Chaetoceros hohnii Graebn. & Wujek
Chaetoceros muelleri var. subsalsum J.R.Johans. & Rushforth
Chaetoceras sp.

Cocconeis diminuta Pant.
Cocconeis diminuta var. aegagropilae Murobuse
Cocconeis diruptoides Hust.
Cocconeis disculus (Schum.) Cleve
Cocconeis disculus var. diminuta (Pant.) A.Cleve
Cocconeis flexella (Kütz.) Cleve
Cocconeis flexulla (Kütz.) Cleve [orthographic error]
Cocconeis fluviatilis Wallace
Cocconeis japonica A.W.F.Schmidt
Cocconeis lineata Ehrenb.
Cocconeis neodiminuta Krammer in Krammer & Lange-Bert.
Cocconeis pediculus Ehrenb.
Cocconeis placentula Ehrenb.
Cocconeis placentula var. euglypta (Ehrenb.) Grunow
Cocconeis placentula var. klinoraphis Geitler
Cocconeis placentula var. lineata (Ehrenb.) VanHeurck
Cocconeis placentula var. rouxii (Hérib. & Brun) Cleve
Cocconeis rouxii Hérib. & Brun
Cocconeis schlettum [orthographic error]
Cocconeis rhombea Ehrenb.
Cocconeis scutellum Ehrenb.
Cocconeis scutellum var. japonica (A.W.F.Schmidt) Skvortzov
Cocconeis scutellum var. parva (Grunow) Cleve
Cocconeis thumensis A.Mayer
Cocconeis thwaitesii W.Sm.
Cocconeis transversalis Greg.

Cocconema cistula Hempr.
Cocconema cymbiforme (Kütz.) Ehrenb.
Cocconema fusidium Ehrenb.
Cocconema gastroides (Kütz.) Pell.
Cocconema lanceolatum Ehrenb.
Cocconema parva W.Sm.
Cocconema scotica W.Sm.

Colletonema lucustre VanHeurck

Comphonema constrictum Ehrenb. [orthographic error]

Coscinodiscus asteromorphus Ehrenb.
Coscinodiscus curvatalus Grunow
Coscinodiscus decrescens Grunow
Coscinodiscus lacustris Grunow
Coscinodiscus lanceolatum Ehrenb.
Coscinodiscus marginatus Ehrenb.
Coscinodiscus radiatus Ehrenb.
Coscinodiscus rothii (Ehrenb.) Grunow
Coscinodiscus rothii var. subsalsa (Juhl.-Dannf.) Hust.
Coscinodiscus subsalsa Juhl.-Dannf.
Coscinodiscus subsalsus Juhl.-Dannf. [orthographic error]
Coscinodiscus subtillis var. ? [nom. nud.]
Coscinodiscus tuberculatus Grev.
Coscinodiscus tuberculatus var. ? A.W.F.Schmidt [nom. illegit.]

Cosmioneis lundstroemii (Cleve in Cleve & Grunow) D.G.Mann in Round, Crawford & Mann
Cosmioneis pusilla (W.Sm.) D.G.Mann & Stickle in Round, Crawford & Mann

Craspedodiscus coscinodiscus Ehrenb.
Craspedodiscus microdiscus Ehrenb.

Craticula accomoda (Hust.) D.G.Mann in Round, Crawford & Mann
Craticula ambigua (Ehrenb.) D.G.Mann in Round, Crawford & Mann
Craticula cuspidata (Kütz.) D.G.Mann in Round, Crawford & Mann
Craticula cuspidata var. major (F.Meister) Czarn.
Craticula halophila (Grunow) D.G.Mann in Round, Crawford & Mann
Craticula subhalophila (Hust.) Lange-Bert.
Craticula vixvisibilis (Hust.) Lange-Bert.

Ctenophora pulchella (Ralfs ex Kütz.) D.M.Williams & Round
Ctenophora pulchella var. lacerata (Hust.) Bukht.
Ctenophora pulchella var. lanceolata (O'Meara) Bukht.

Cyclostephanos costatilumbus (Kob. & Kob.) Stoermer, Håk. & Theriot.
Cyclostephanos dubius (Fricke) Round in Theriot, Håkansson, Kociolek, Round & Stoermer
Cyclostephanos invisitatus (Hohn & Hellerm.) Theriot, Stoermer & Håk.
Cyclostephanos tholiformis Stoermer, Håk. & Theroit

Cyclotella americana Fricke
Cyclotella antiqua W.Sm.
Cyclotella atomus Hust.
Cyclotella bodanica Eulenst.
Cyclotella bodanica-comta Eulenst.-(Ehrenb.) Kütz. [nom. illegit.]
Cyclotella bodanica var. michiganensis Skvortzov
Cyclotella bodanica var. stellata Skvortzov
Cyclotella caspia Grunow
Cyclotella catenata Brun
Cyclotella cavita [nom. nud.]
Cyclotella chaetoceras Lemm.
Cyclotella comensis Grunow
Cyclotella compta (Ehrenb.) Kütz. [orthographic error]
Cyclotella comta (Ehrenb.) Kütz.
Cyclotella comta var. bodanica Grunow
Cyclotella comta var. glabriuscula Grunow
Cyclotella comta var. oligactis (Ehrenb.) Grunow
Cyclotella comta var. radiosa Grunow
Cyclotella comta var. paucipunctata Grunow
Cyclotella cryptica Reimann, Lewin & Guillard
Cyclotella cyclopunctata Håk & Carter
Cyclotella delicatula Hust.
Cyclotella distinguenda Hust.
Cyclotella distinguenda var. unipunctata (Hust.) Håk.
Cyclotella dubia Hilse
Cyclotella facetia Hohn & Hellerm.
Cyclotella gamma Sovereign
Cyclotella glomerata Bachm.
Cyclotella glomerata-stelligera Bachmann-Cleve & Grunow [nom. illegit.]
Cyclotella krammeri Håk.
Cyclotella kuetzingiana Thwaites
Cyclotella kuetzingiana var. phanetophora Fricke [orthographic error]
Cyclotella kuetzingiana var. planetophora Fricke
Cyclotella kuetzingiana var. radiosa Fricke
Cyclotella kutzingiana Thwaites [orthographic error]
Cyclotella melosiroides (Kirchn.) Lemm.
Cyclotella meneghiniana Kütz.
Cyclotella meneghiniana fo. plana Fricke [orthographic error]
Cyclotella meneghiniana var. plana Fricke
Cyclotella meneghiniana var. stellulifera Cleve & Grunow

Cyclotella stelligera (Cleve & Grunow) VanHeurck
Cyclotella michiganianaSkvortzov
Cyclotella nana Hust.

Thalassiosira pseudonana Hasle & Heim.
Cyclotella ocellata Pant.
Cyclotella ocellata-kutzingiana [nom. illegit.]
Cyclotella operculata (C.Agardh) Kütz.
Cyclotella operculata var. unipunctata (Fricke) Hust.
Cyclotella operculata unipunctata (Fricke) Hust. [nom. illegit.]
Cyclotella planktonica Brunnth.
Cyclotella pseudostelligera Hust.
Cyclotella quadriiunta (Schroeter) Hust.
Cyclotella radiosa Grunow
Cyclotella rossii Håk.
Cyclotella rotula Kütz.
Cyclotella socialis Schutt
Cyclotella spinosa Schum.
Cyclotella stelligera (Cleve & Grunow) VanHeurck
Cyclotella striata (Kütz.) Grunow
Cyclotella striata var. bipunctata Fricke
Cyclotella strisignata Grunow [nom. nud.]
Cyclotella temperei M.Perag. & Hérib.
Cyclotella thienemannii var. minuscula Jurilj
Cyclotella ucculata Pant. [orthographic error]
Cyclotella wolterecki Hust.

Cymatopleura angulata Grev.
Cymatopleura apiculata W.Sm.
Cymatopleura cochlea Brun
Cymatopleura elliptica (Bréb. & Godey) W.Sm.
Cymatopleura elliptica var. hibernica (W.Sm.) VanHeurck
Cymatopleura elliptica fo. spiralis Boyer
Cymatopleura hibernica W.Sm.
Cymatopleura hibernica var. rhombica H.H.Chase
Cymatopleura solea (Bréb. & Godey) W.Sm.
Cymatopleura solea var. apiculata (W.Sm.) Ralfs
Cymatopleura solea var. clavata O.Müll.
Cymatopleura solea var. gracilis Grunow
Cymatopleura solea var. pfuhlii Torka
Cymatopleura solea var. subconstricta O.Müll.
Cymatopleura solea var. regula (Ehrenb.) Grunow
Cymatopleura spiralis H.H.Chase

Cymbella acutiuscula Cleve
Cymbella aequalis W.Sm.
Cymbella affinis Kütz.
Cymbella amphicephala Nägeli
Cymbella amphicephala var. subundulata Cleve
Cymbella anglica Lagerst.

Cymbella naviculiformis Auersw.
Cymbella angustata (W.Sm.) Cleve
Cymbella aspera (Ehrenb.) H.Perag.
Cymbella aspera var. minor (VanHeurck) Cleve
Cymbella austriaca Grunow
Cymbella brehmii Hust.
Cymbella caespitosa Brun
Cymbella cesatii (Rabenh.) Grunow ex A.W.F.Schmidt
Cymbella cistula (Ehrenb. in Hemprich & Ehrenb.) Kirchn. in Cohn
Cymbella cistula var. gibbosa Brun
Cymbella cistula var. maculata (Kütz.) VanHeurck
Cymbella cistula var. truncata Brun
Cymbella cuspidata Kütz.
Cymbella cuspidata fo. impressa Fusey
Cymbella cuspidata var. schulzii A.Cleve
Cymbella cymbiformis C.Agardh
Cymbella delicatula Kütz.
Cymbella designata Krammer in Krammer & Lange-Bert.
Cymbella diluviana (Krasske) Florin
Cymbella ehrenbergii Kütz.
Cymbella elginsis Krammer
Cymbella fonticolaÿ Hust.
Cymbella gastroides Kütz.
Cymbella gracilis (Rabenh.) Cleve
Cymbella hauckii VanHeurck
Cymbella hebridica Grunow
Cymbella helvetica Kütz.
Cymbella hustedtii Krasske
Cymbella hybrida Grunow
Cymbella inaequalis (Ehrenb.) Rabenh.
Cymbella incerta (Grunow) Cleve
Cymbella jordani Grunow
Cymbella lacustris (C.Agardh) Cleve
Cymbella laevis Nägeli ex Kütz.
Cymbella lanceolata (C.Agardh) C.Agardh
Cymbella lata Grunow
Cymbella latens Krasske
Cymbella leptoceros (Ehrenb.) Kütz.
Cymbella leptoceros var. rostrata Hust.
Cymbella leptocerus (Ehrenb.) VanHeurck [orthographic error]
Cymbella lunata W.Sm.
Cymbella maculata Kütz.
Cymbella mexicana (Ehrenb.) Cleve
Cymbella microcephala Grunow
Cymbella microcephala var. crassa C.W.Reimer
Cymbella minuta Hilse
Cymbella minuta var. pseudogracilis (Choln.) C.W.Reimer
Cymbella minuta var. silesiaca (Bleisch ex Rabenh.) C.W.Reimer
Cymbella minuta fo. latens (Krasske) C.W.Reimer
Cymbella moelleriana Grunow
Cymbella muelleri Hust.
Cymbella muelleri fo. ventricosa (Temp. & M. Perag.) C.W.Reimer
Cymbella naviculiformis Auersw. ex Heib.
Cymbella norvegica Grunow
Cymbella obtusa Greg.
Cymbella obtusiuscula Kütz.
Cymbella parva (W.Sm.) Wolle
Cymbella parvula Krasske
Cymbella pediculus Kütz.
Cymbella prostrata (Berk.) Cleve
Cymbella prostrata var. auerswaldii (Rabenh.) C.W.Reimer
Cymbella prostrata var. caespitosa [nom. illegit.]
Cymbella proxima C.W.Reimer
Cymbella pusilla Grunow
Cymbella rabenhorstii Ross
Cymbella rhombiodea Boyer [orthographic error]
Cymbella rotundata H.H.Chase
Cymbella rugosa Hust.
Cymbella ruttneriHust.
Cymbella ruttneri var. obtusa Hust.
Cymbella scotica W.Sm.
Cymbella similis Krasske
Cymbella sinuata Greg.
Cymbella sinuata var. ovata Hust. [nom. illegit.]
Cymbella sinuata fo. antiqua (Grunow) C.W.Reimer
Cymbella sinuata fo. ovata (Hust.) Hust.
Cymbella sinuata var. antiqua (Grunow) Cleve
Cymbella stomatophora Grunow
Cymbella subaequalis Grunow
Cymbella subaequalis fo. krasskei (Foged) C.W.Reimer
Cymbella subventricosa Choln.
Cymbella triangularis (Ehrenb.) Cleve [orthographic error]
Cymbella triangulum (Ehrenb.) Cleve
Cymbella tumida (Bréb.) VanHeurck
Cymbella tumidula Grunow
Cymbella turgida Greg.
Cymbella turgida var. pseudogracilis Choln.
Cymbella turgidula Grunow
Cymbella ventricosa C.Agardh (see note 34)

Encyonema silesacum (Bleisch in Rabenh.) D.G.Mann in Round, Crawford & Mann pro parte

Encyonema minutum (Hilse in Rabenh.) D.G.Mann in Round, Crawford & Mann pro parte

Cymbellonitzschia diluviana Hust.

Cyratopleura eliptica (Bréb. et Goday) W.Sm. [orthographic error]

Cystopleura gibba (Ehrenb.) Kuntze
Cystopleura turgida (Ehrenb.) Kuntze

Denticula elegans Kütz.
Denticula frigida Kütz.
Denticula lauta J.W.Bail.
Denticula tenuis Kütz.
Denticula tenuis var. crassula (Nägeli) W.West & G.S.West
Denticula tenuis var. frigida (Kütz.) Grunow
Denticula thermalis Kütz.

Diadesmis confervacea Kütz.
Diadesmis contenta (Grunow ex VanHeurck) D.G.Mann in Round, Crawford & Mann
Diadesmis contenta var. biceps (Arn. ms., Grunow in VanHeurck) Poulin
Diadesmis peregrina W.Sm.
Diadesmis perpusilla (Grunow) D.G.Mann in Round, Crawford & Mann

Diatoma anceps (Ehrenb.) Kirchn.
Diatoma anceps var. linearis M.Perag.
Diatoma ehrenbergii Kütz.
Diatoma elongata C.Agardh
Diatoma elongatum (Lyngb.) C.Agardh
Diatoma elongatum var. minor Grunow
Diatoma elongatum var. tenue (C.Agardh) VanHeurck
Diatoma elongatum var. tenuis (C.Agardh) VanHeurck
Diatoma hiemale (Roth) Heib.
Diatoma hiemale var. mesodon (Ehrenb.) Grunow
Diatoma tenue C.Agardh
Diatoma tenue elongatum [orthographic error]
Diatoma tenue var. elongarum Lyngb. [orthographic error]
Diatoma tenue var. elongatum Lyngb.
Diatoma tenue var. pachycephala Grunow
Diatoma tenue var. pachycephalum [orthographic error]

Diatoma tenuevar. pachycephala Grunow
Diatoma vulgare Bory
Diatoma vulgare var. breve Grunow
Diatoma vulgare var. ehrenbergii (Kütz.) Grunow
Diatoma vulgare var. grande (W.Sm.) Grunow
Diatoma vulgare var. linearis VanHeurck
Diatoma vulgare var. ovale (Fricke) Hust. [orthographic error]
Diatoma vulgare var. ovalis (Fricke) Hust.
Diatoma vulgare var. producta Grunow

Didymosphenia geminata (Lyngb.) M. Schmidt

Diploneis boldtiana Cleve
Diploneis domblittensis (Grunow) Cleve
Diploneis elliptica (Kütz.) Cleve
Diploneis elliptica var. ladogensis Cleve
Diploneis elliptica var. pygmaea A.Cleve
Diploneis finnica (Ehrenb.) Cleve
Diploneis interrupta (Kütz.) Cleve
Diploneis marginestriata Hust.
Diploneis oblongella (Nägeli) Ross
Diploneis oblongella var. genuina (Nägeli ex Kütz.) Ross
Diploneis oculata (Bréb.) Cleve
Diploneis ocellata Østrup
Diploneis ovalis (Hilse) Cleve
Diploneis papula (A.W.F.Schmidt) Cleve
Diploneis parma Cleve
Diploneis peterseni Hust.
Diploneis pseudovalis Hust.
Diploneis pseudoovalis Hust. [orthographic error]
Diploneis puella (Schum.) Cleve
Diploneis pupula (A.W.F.Schmidt) Cleve [orthographic error]
Diploneis smithii (Bréb.) Cleve
Diploneis smithii var. pumila (Grunow) Hust.
Diploneis subovalis Cleve

Ellerbeckia arenaria (Moore ex Ralfs) R.M.Crawford

Encyonema auerswaldii Rabenh.
Encyonema brehmii (Hust.) D.G.Mann in Round, Crawford & Mann
Encyonema caespitosum Kütz.
Encyonema gracile Rabenh.
Encyonema hebridica Grunow ex Cleve
Encyonema lacustre (C.Agardh) D.G.Mann in Round, Crawford & Mann
Encyonema latens (Krasske) D.G.Mann in Round, Crawford & Mann
Encyonema limula [nom. nud.]
Encyonema lunatum (W.Sm. in Grev.) VanHeurck
Encyonema minutum (Hilse ex Rabenh.) D.G.Mann in Round, Crawford & Mann
Encyonema minutum var. pseudogracilis (Choln.) Czarn.
Encyonema muelleri (Hust.) D.G.Mann in Round, Crawford & Mann
Encyonema muelleri fo. ventricosa (Temp. & M.Perag.) Czarn.
Encyonema norvegica (Grunow) Bukht.
Encyonema prostratum (Berk.) Kütz.
Encyonema rugosum (Hust.) D.G.Mann in Round, Crawford & Mann
Encyonema silesiacum (Bleisch ex Rabenh.) D.G.Mann in Round, Crawford & Mann
Encyonema triangulatum Kütz.
Encyonema triangulum (Ehrenb.) Kütz.
Encyonema turgidum (Greg.) Grunow
Encyonema ventricosa Kütz.
Encyonema ventricosum Kütz.

Entomoneis alata (Ehrenb.) Ehrenb.
Entomoneis ornata (J.W.Bail.) C.W.Reimer
Entomoneis paludosa (W.Sm.) C.W.Reimer

Epithemia adnata (Kütz.) Bréb.
Epithemia adnata var. minor (M.Perag. & Hérib.) R.M.Patrick
Epithemia adnata var. porcellus (Kütz.) R.M.Patrick
Epithemia adnata var. proboscidea (Kütz.) R.M.Patrick
Epithemia adnata var. saxonica (Kütz.) R.M.Patrick>/a>
Epithemia alpestris W.Sm.
Epithemia andrewsii Stoermer & Yang [nom. superf.]
Epithemia argus(Ehrenb.) Kütz.
Epithemia argusvar. alpestris Grunow
Epithemia argusvar. amphicephala Grunow
Epithemia argusvar. longicornis (Ehrenb.) Grunow
Epithemia emarginata Andrews
Epithemia frickei Krammer
Epithemia gibba (Ehrenb.) Kütz.
Epithemia gibba var. parallela Grunow
Epithemia gibba var. ventricosa (Kütz.) Grunow
Epithemia gibberula (Ehrenb.) Kütz.
Epithemia hyndmanni W.Sm.
Epithemia intermedia Fricke
Epithemia muelleri Fricke
Epithemia ocellata (Ehrenb.) Kütz.
Epithemia reicheltii Fricke
Epithemia smithii Carruthers
Epithemia sorex Kütz.
Epithemia surex Kütz. [orthographic error]
Epithemia turgida (Ehrenb.) Kütz.
Epithemia turgida var. granulata (Ehrenb.) Brun
Epithemia turgida var. plicata Meist.
Epithemia turgida var. westermannii (Ehrenb.) Grunow
Epithemia turgida var. zebrina (Ehrenb.) Rabenh.
Epithemia ventricosa Ehrenb.
Epithemia zebra (Ehrenb.) Kütz.
Epithemia zebra var. porcellus (Kütz.) Grunow
Epithemia zebra var. saxonica (Kütz.) Grunow

Eucocconeis depressa (Cleve) Hust.
Eucocconeis flexella (Kütz.) Cleve
Eucocconeis flexella var. alpestris (Brun) Hust.
Eucocconeis lapponica Hust. (see note 3)
Eucocconeis lapponica var. ninckei (C.W.Reimer) Stoermer & Yang
Eucocconeis lapponica var. ninckei (Guermeur & Mang.) M.B.Edlund
Eucocconeis minuta (Cleve) Cleve

Eunotia acus nomem nudum [orthographic error]
Eunotia arcubus Nörpel & Lange-Bert. in Lange-Bert.
Eunotia arcus Ehrenb.
Eunotia arcus var. bidens Grunow
Eunotia arcus var. fallax Hust.
Eunotia bidens Ehrenb.
Eunotia curvata (Kütz.) Lagerst.
Eunotia diodon Ehrenb.
Eunotia exigua (Bréb.) Rabenh.
Eunotia flexuosa Bréb. ex Kütz.
Eunotia flexuosa var. eurycephala Grunow
Eunotia formica Ehrenb.
Eunotia glacialis F.Meister
Eunotia gracilis (Ehrenb.) Rabenh.
Eunotia granulata Ehrenb.
Eunotia incisa W.Sm.
Eunotia inflata (Grunow) Norpel-Schempp & Lange-Bert. in Lange-Bertalot
Eunotia intermedia (Krasske) Norpel-Schempp & Lange-Bert. in Lange-Bertalot
Eunotia lunaris (Ehrenb.) Grunow
Eunotia lunaris var. excisa Grunow
Eunotia major (W.Sm.) Rabenh.
Eunotia major var. impressa (W.Sm.) Rabenh.
Eunotia microcephala Krasske
Eunotia monodan (Ehrenb.) W.Sm. [orthographic error]
Eunotia monodan var. major (W.Sm.) Hust. [orthographic error]
Eunotia monodon Ehrenb.
Eunotia monodon var. major (W.Sm.) Hust.
Eunotia monodontiforma Lange-Bert. & Nörpel in Lange-Bert.
Eunotia naegelii Migula
Eunotia parallela Ehrenb.
Eunotia pectinalis (O.Müll.) Rabenh.
Eunotia pectinalis var. minor (Kütz.) Rabenh.
Eunotia pectinalis var. undulata (Ralfs) Rabenh.
Eunotia pectinalis var. ventricosa Grunow
Eunotia pectinalis fo. minor (Dillwyn) Rabenh.
Eunotia perpusilla Grunow
Eunotia praerupta Ehrenb.
Eunotia praerupta var. bidens (Ehrenb.) Grunow
Eunotia praerupta var. inflata Grunow
Eunotia praerupta var. laticepsfo. curtaGrunow
Eunotia pseudolunaris Venkt.
Eunotia robusta var. tetraedon (Ehrenb.) Ralfs
Eunotia septentrionalis Østrup
Eunotia serra Ehrenb.
Eunotia serra var. diadema (Ehrenb.) R.M.Patrick
Eunotia tenella (Grunow) Hust.
Eunotia trinacria Krasske
Eunotia valida Hust.
Eunotia vanheurckii R.M.Patrick
Eunotia vanheurckii var. intermedia (Krasske) R.M.Patrick
Eunotia woleirotii (Kütz.) Rabenh.
Eunotia zebrina Ehrenb.

Fragellaria crotonensis Kitton [orthographic error]

Fragilaria acuta Ehrenb.
Fragilaria arcus (Ehrenb.) Cleve
Fragilaria atomus Hust.
Fragilaria bicapitata A.Mayer
Fragilaria bipunctata Ehrenb.
Fragilaria brevistriata Grunow in VanHeurck
Fragilaria brevistriata var. binodis (Pant.) A.Cleve
Fragilaria brevistriata var. capitata Hérib.
Fragilaria brevistriata var. inflata (Pant.) Hust.
Fragilaria brevistriata var. subcapitata Grunow in VanHeurck [name illegitimate]
Fragilaria capucinaDesm.
Fragilaria capucina var. acuta (Ehrenb.) Rabenh.
Fragilaria capucina var. lanceolata Grunow
Fragilaria capucina var. mesolepta Rabenh.
Fragilaria constricta Ehrenb.
Fragilaria constricta fo. stricta (A.Cleve) Hust.
Fragilaria construens (Ehrenb.) Grunow
Fragilaria construens var. bigibba A.Cleve
Fragilaria construens var. binodes (Ehrenb.) Grunow [orthographic error]
Fragilaria construens var. binodis (Ehrenb.) Grunow
Fragilaria construens var. capitata Hérib.
Fragilaria construens var. minuta Temp. & M.Perag.
Fragilaria construens var. pumila Grunow
Fragilaria construens var. subsalina Hust.
Fragilaria construens var. venter (Ehrenb.) Grunow
Fragilaria crotenensis Kitton [orthographic error]
Fragilaria crotonensis Kitton
Fragilaria crotonensis var. oregona Sovereign
Fragilaria crotonensis var. prolongata Grunow
Fragilaria crotonensis var. tenuissima [nom. nud.]
Fragilaria entomon (Ehrenb.) Ehrenb.
Fragilaria gracillima Mayer
Fragilaria harrisonii Grunow
Fragilaria harrisonii var. dubia Grunow
Fragilaria harrisonii var. rhomboides Grunow
Fragilaria heideni Østrup
Fragilaria heideni var. istvanffyi (Pant.) Hust.
Fragilaria inflata (Heid.) Hust.
Fragilaria intermedia Grunow
Fragilaria intermedia var. continua A.Cleve
Fragilaria intermedia var. fallax (Grunow) A.Cleve
Fragilaria intermiedia var. fallax (Grunow) A.Cleve
Fragilaria intermedia var. lanceolata Fusey
Fragilaria kriegeriana Krasske
Fragilaria lapponica Grunow
Fragilaria leptostauron (Ehrenb.) Hust.
Fragilaria leptostauron var. dubia (Grunow) Hust.
Fragilaria leptostauron var. fossilis (Pant.) Reháková
Fragilaria leptostauron var. rhomboides (Grunow) Hust.
Fragilaria linearis Castracane
Fragilaria minuscula Grunow non D.M.Williams & Round (see note11)
Fragilaria mutabilis (W.Sm.) Grunow
Fragilaria mutabilis var. intercedens Grunow in VanHeurck
Fragilaria nitzschioides Grunow
Fragilaria pantocsekii var. binodis (Pant.) A.Cleve
Fragilaria parasitica (W.Sm.) Grunow
Fragilaria pinnata Ehrenb.
Fragilaria pinnata var. intercedens (Grunow in VanHeurck) Hust.
Fragilaria pinnata var. lancettula (Schum.) Hust.
Fragilaria radians (Kütz.) D.M.Williams & Round
Fragilaria rhomboides (Ehrenb.) DeToni [nom. nud.]
Fragilaria spinosa Skvortzov
Fragilaria vaucheriae(Kütz.) J.B.Petersen (see note 12)
Fragilaria vaucheriae var. capitellata (Grunow) R.M.Patrick
Fragilaria vaucheriae var. fallax Grunow
Fragilaria vaucheriae var. lanceolata A.Mayer
Fragilaria vaucheriae var. parvula (Kütz.) A.Cleve
Fragilaria vaucheriae var. truncata (Grev.) Grunow
Fragilaria virescens Ralfs
Fragilaria virescense [orthographic error]
Fragilaria virescens var. capitata Østrup
Fragilaria virescens var. mesolepta (Rabenh.) Schönf.
Fragilaria virescens var. oblongella Grunow

Fragilariaforma bicapitata (Mayer) D.M.Williams & Round
Fragilariaforma constricta (Ehrenb.) D.M.Williams & Round
Fragilariaforma constricta fo. stricta (A.Cleve) Poulin
Fragilariforma virescens (Ralfs) D.M.Williams & Round
Fragilariforma virescens var. capitata (Østrup) Czarn.

Fragilariopsis linearis (Castracane) Hust.

Frustulia erifuga Lange-Bert. & Krammer in Lange-Bertalot
Frustulia rhomboides (Ehrenb.) >DeToni
Frustulia rhomboides var. amphipleuroides (Grunow) Cleve in Cleve & Grunow
Frustulia rhomboides var. crassinervia (Bréb.) Ross
Frustulia rhomboides var. saxonica (Rabenh.) DeToni
Frustulia rhomboides var. viridula (Bréb.) Cleve
Frustulia saxonica Ehrenb.
Frustulia viridula (Bréb.) DeToni
Frustulia vulgaris (Thwaites) DeToni
Frustulia vulgaris var. capitata Krasske
Frustulia weinholdii Hust.

Gallionella distans Ehrenb.

Geissleria acceptata (Hust.) Lange-Bert. & Metzeltin in Lange-Bert.
Geissleria declivis (Hust.) Lange-Bert.
Geissleria decussis (Østrup) Lange-Bert. & Metzeltin in Lange-Bert.
Geissleria kriegeri (Krasske) Lange-Bert.>
Geissleria paludosa (Hust.) Lange-Bert. & Metzeltin in Lange-Bert.
Geissleria schoenfeldii (Hust.) Lange-Bert. & Metzetlin in Lange-Bert.
Geissleria similis (Krasske) Lange-Bert. & Metzeltin in Lange-Bert.
Geissleria tectissima (Lange-Bert.) Lange-Bert.
Geissleria thingvallae (Østrup) Metzeltin & Lange-Bert. in Lange-B

Gloeonema paradoxum Ehrenb.
Gloeonema triangulatum Ehrenb.

Gomphoneis eriense (Grunow) Skvortzov & Meyer
Gomphoneis geitleri Kociolek & Stoermer
Gomphoneis herculeana (Ehrenb.) Cleve
Gomphoneis herculeana var. robusta (Grunow) Cleve
Gomphoneis olivacea (Hornemann) Dawson ex Ross & Sims
Gomphoneis olivacea var. calcarea (Cleve) Poulin in Poulin, Hamilton & Proulx
Gomphoneis quadripunctata (Østrup) P.A.Dawson ex Ross & Sims
Gomphoneis quadripunctata var. cochleariformis Kociolek & Stoermer

Gomphonema abbreviatum C.Agardh
Gomphonema abbreviatum var. inflata Hust.
Gomphonema acuminatum Ehrenb.
Gomphonema acuminatum var. brebissonii (Kütz.) Cleve
Gomphonema acuminatum var. coronatum (Ehrenb.) Rabenh.
Gomphonema acuminatum var. intermedia Grunow
Gomphonema acuminatum var. laticeps Ehrenb.
Gomphonema acuminatum var. pusillum Grunow
Gomphonema acuminatum var. pussilum Grunow [orthographic error]
Gomphonema acuminatum var. sphaerophora [nom. illegit.]
Gomphonema acuminatum var. trigonocephalum (Ehrenb.) Grunow
Gomphonema acuminatum var. turris Ehrenb. (see note 13)
Gomphonema affine Kütz.
Gomphonema affine var. elongatum (Mayer) Millie & Lowe
Gomphonema affine var. insigne (Greg.) Andrews
Gomphonema americanum Ehrenb.
Gomphonema angustatum (Kütz.) Rabenh.
Gomphonema angustatum var. citera (Hohn & Hellerm.) R.M.Patrick
Gomphonema angustatum var. obtusatum (Kütz.) Grunow
Gomphonema angustatum var. productum Grunow
Gomphonema angustatum var. sarcophagus (Greg.) Grunow
Gomphonema angustatum var. sarcophagu fo. undulata [nom. illegit.]
Gomphonema angustatum var. undulata Grunow
Gomphonema angustatum fo. undulata Grunow
Gomphonema apuncto Wallace
Gomphonema augur Ehrenb.
Gomphonema bohemicum Reich. & Fricke
Gomphonema brasiliense Grunow
Gomphonema capitatum Ehrenb.
Gomphonema clevei Fricke
Gomphonema consector Hohn & Hellerm.
Gomphonema constrictum Ehrenb.
Gomphonema constrictum var. capitata (Ehrenb.) VanHeurck
Gomphonema coronatum Ehrenb
Gomphonema crenulata (Ehrenb.) Kütz. [nom. nud.]
Gomphonema curvatum Kütz.
Gomphonema dichotomum Kütz.
Gomphonema eriense Grunow
Gomphonema exilissima (Grunow) Lange-Bert. & Reichart in Lange-Bert.
Gomphonema geminata (Lyngb.) C.Agardh
Gomphonema germainii Kociolek & Stoermer
Gomphonema gracile Ehrenb. em. VanHeurck
Gomphonema gracile var. cymbelloides Grunow
Gomphonema gracile var. dicotoma (Kütz.) Grunow
Gomphonema gracilevar. naviculacea (W.Sm.) Cleve
Gomphonema grovei M.Schmidt
Gomphonema grovei var. lingulatum (Hust.) Lange-Bert. in Krammer & Lange-Bert.
Gomphonema grunowii R.M.Patrick
Gomphonema helveticum Brun
Gomphonema helveticum var. tenuis Hust.
Gomphonema herculeanum Ehrenb.
Gomphonema herculeanum var. robusta Grunow
Gomphonema intricatum Kütz. (see note 14)
Gomphonema intricatum var. dichotomum (Kütz.) Grunow
Gomphonema intricatum var. fossilis Pant.
Gomphonema intricatum var. pumila Grunow (see note 15)
Gomphonema intricatum var. vibrio (Ehrenb.) Cleve (see note 16)
Gomphonema lanceolatum Ehrenb.
Gomphonema lanceolatum var. insignis (Greg.) Cleve
Gomphonema laticeps Ehrenb.
Gomphonema leptocampum Kociolek & Stoermer
Gomphonema lingulatum Hust.
Gomphonema longiceps Ehrenb.
Gomphonema longiceps var. gracilis Hust. [nom. nud.]
Gomphonema longiceps var. montana (Schum.) Hust.
Gomphonema longiceps var. subclavatum Grunow
Gomphonema longiceps var. subclavatum fo. gracilis Hust.
Gomphonema longiceps fo. gracilis Hust.
Gomphonema manubrium M.Schmidt & Fricke
Gomphonema manubrium M.Schmidt & Fricke sensu Kociolek & Stoermer
Gomphonema montanum Schum.
Gomphonema obscurum (W.Sm.) J.W.Griff. & Henfr. [orthographic error]
Gomphonema olivaceoides Hust.
Gomphonema olivaceoides var. cochleariformis Mang.
Gomphonema olivaceoides var. densestriata Foged
Gomphonema olivaceoides var. hutchinsoniana R.M.Patrick
Gomphonema olivaceum (Lyngb.) Kütz.
Gomphonema olivaceum var. calcareum (Cleve) Cleve
Gomphonema olivaceum var. minutissimaHust.
Gomphonema olivaceum var. olivaceoides (Hust.) Lange-Bert. in Lange-Bert. & Krammer
Gomphonema olivacium (Lyngb.) Kütz. [orthographic error]
Gomphonema parvulum (Kütz.) Kütz.
Gomphonema parvulum var. exilissima Grunow
Gomphonema parvulum var. lagenula (Kütz.) Freng.
Gomphonema parvulum var. micropus (Kütz.) Cleve
Gomphonema parvulum var. subelliptica Cleve
Gomphonema productum Lange-Bert. & Reichardt in Lange-Bert.
Gomphonema pseudoaugur Lange-Bert.
Gomphonema pseudotenellum Lange-Bert.
Gomphonema pygmaeum Kociolek & Stoermer
Gomphonema quadripunctatum (Østrup) Wisl.
Gomphonema robustum Grunow
Gomphonema sarcophagus Greg.
Gomphonema semiapertum Grunow
Gomphonema sphaerophorum Ehrenb.
Gomphonema subclavata fo. gracilis (Hust.) Woodhead & Tweed
Gomphonema subclavatum (Grunow) Grunow
Gomphonema subclavatum fo. gracilis (Hust.) Woodhead & Tweed
Gomphonema subclavatum var. mexicanum [no author, see Kingston 1980] [nom. illegit.?] (see note 17)
Gomphonema subclavatum var. mustela (Ehrenb.) Cleve

Gomphonema longiceps Ehrenb.
Gomphonema submehleri Kociolek & Stoermer
Gomphonema subtile Ehrenb.
Gomphonema subtile var. sagitta (Schum.) Cleve
Gomphonema superiorensis Kociolek & Stoermer
Gomphonema tenellum Kütz.
Gomphonema tergestinum (Grunow) Fricke
Gomphonema trigonocephalum Ehrenb.
Gomphonema truncatum Ehrenb.
Gomphonema truncatum var. capitatum (Ehrenb.) R.M.Patrick in Patrick & Reimer
Gomphonema truncatum var. macilentum Kociolek & Stoermer
Gomphonema truncatum var. turgidum (Ehrenb.) R.M.Patrick in Patrick & Reimer
Gomphonema tumens Kociolek & Stoermer
Gomphonema turgidum Grunow
Gomphonema turris Ehrenb.
Gomphonema ventricosum Greg.
Gomphonema ventricosum Greg. sensu Kociolek & Stoermer 1987
Gomphonema vibrio Ehrenb.
Gomphonema vibrio var. fossile (Pant.) Ross
Gomphonema vibrio var. intricatum (Kütz.) Ross
Gomphonema vibrio var. pumilum (Grunow in VanHeurck) Ross

Gyrosigma acuminatum (Kütz.) Rabenh.
Gyrosigma attenuatum (Kütz.) Rabenh. Gyrosigma exilis (Grunow) C.W.Reimer
Gyrosigma eximium (Thwaites) Boyer
Gyrosigma kuetzingii (Grunow) Cleve (see note 18)
Gyrosigma macrum (W.Sm.) J.W.Griff & Henfr.
Gyrosigma nodiferum (Grunow) C.W.Reimer sensu Reimer in Patrick & Reimer
Gyrosigma nodiferum (Grunow) C.W.Reimer sensu Krammer & Lange-Bert.
Gyrosigma obscurum (W.Sm.) J.W.Griff. & Henfr.
Gyrosigma obtusatum (Sull. & Wormley) Boyer
Gyrosigma parkeri (M.B.Harrison) Elmore
Gyrosigma reimeri Sterrenb.
Gyrosigma scalproides (Rabenh.) Cleve
Gyrosigma sciotense (Sull. & Wormley) Cleve [historical orthographic error sciotoense vs. sciotense]
Gyrosigma sciotoense (Sull. & Wormley) Cleve
Gyrosigma spencerii (Quek.) J.W.Griff. & Henfr.
Gyrosigma spencerii var. curvula (Grunow) C.W.Reimer
Gyrosigma spencerii var. nodifera (Grunow) Cleve(see note 35)
Gyrosigma strigile (W.Sm.) Cleve
Gyrosigma strigilis (W.Sm.) Cleve
Gyrosigma temperei Cleve
Gyrosigma wormleyi (Sull.) Boyer

Hannaea arcus (Ehrenb.) R.M.Patrick (see note 9)
Hannaea arcus var. amphioxys (Rabenh.) R.M.Patrick
Hannaea arcus var. linearis Holmboe

Hantzschia amphioxys (Ehrenb.) Grunow (see note 19)
Hantzschia amphioxys var. capitata O.Müll.
Hantzschia amphioxys var. vivax (Hantzsch) Grunow
Hantzschia virgata (Roper) Grunow in Cleve & Grunow
Hantzschia virgata var. capitellata Hust.

Hippodonta capitata (Ehrenb.) Lange-Bert., Metzeltin & Witkowski
Hippodonta costulata (Grunow) Lange-Bert., Metzeltin & Witkowski
Hippodonta hungarica (Grunow) Lange-Bert., Metzeltin & Witkowski
Hippodonta linearis (Østrup) Lange-Bert., Metzeltin & Witkowski
Hippodonta lueneburgensis (Grunow) Lange-Bert., Metzeltin & Witkowski
Hippodonta subcostulata (Hust.) Lange-Bert., Metzeltin & Witkowski

Homoeocladia sigmoidea (Nitzsch.) Elmore

Hyalosynedra laevigata (Grunow) D.M.Williams & Round

Karayevia clevei (Grunow in Cleve & Grunow) Bukht. & Round
Karayevia laterostrata (Hust.) Bukht. & Round

Kobayasia jaagii (F.Meister) Lange-Bert.
Kobayasia subtilissima (Cleve) Lange-Bert.

Kolbesia kolbei (Hust.) Bukht. & Round
Kolbesia ploenensis (Hust.) Bukht. & Round

Krasskella kriegerana (Krasske) Ross & Sims

Luticola mutica (Kütz.) D.G.Mann in Round, Crawford & Mann
Luticola cohnii (Hilse) D.G.Mann in Round, Crawford & Mann
Luticola muticoides (Hust.) D.G.Mann in Round, Crawford & Mann
Luticola muticopsis (VanHeurck) D.G.Mann in Round, Crawford & Mann

Lysigonium granulata (Ehrenb.) Kuntze
Lysigonium varians (C.Agardh) DeToni

Martyana martyi (Hérib.) F.E.Round in Round, Crawford & Mann

Mastogloia braunii Grunow
Mastogloia grevillei W.Sm.
Mastogloia lacustris (Grunow) VanHeurck
Mastogloia smithii Thwaites
Mastogloia smithii var. amphicephala Grunow
Mastogloia smithii var. lacustris Grunow

Melosira dendroteres (Rabenh.) Ross

Orthoseira dendroteres (Rabenh.) R.M.Crawford (see note 21)
Melosira undulata (Ehrenb.) Kütz.
Melosira undulata var. normanii Arn.
Melosira varians C.Agardh

Meridion anceps (Ehrenb.) D.M.Williams
Meridion circulare (Grev.) C.Agardh
Meridion circulare var. constrictum (Ralfs) VanHeurck
Meridion constrictum Ralfs
Meridion intermedium H.L.Sm.
Meridion intermedium var. constrictum H.L.Sm.
Meridion vernale C.Agardh

Microsiphona potamos Weber

Navicula aboensis (Cleve) Hust.
Navicula abiskoensis Hust.
Navicula absoluta Hust.
Navicula acceptata Hust.
Navicula accomoda Hust.
Navicula affinis Ehrenb.
Navicula agnita Hust.
Navicula aikensis R.M.Patrick
Navicula ambigua Ehrenb.
Navicula ambigua var. craticularis Ehrenb.
Navicula americana Ehrenb.
Navicula americana var. alastis Hohn & Hellerm.
Navicula amphibola Cleve
Navicula amphibola var.perrieri M.Perag. & Hérib.
Navicula amphibola var.polymorpha Fusey
Navicula amphiceros Kütz.
Navicula amphigomphus Ehrenb.
Navicula amygdalina Hust.
Navicula anatis Hohn & Hellerm.
Navicula anglica Ralfs sensu Hust.
Navicula anglica var. signata Hust.
Navicula anglica var. subsalsa (Grunow) Cleve
Navicula angusta Grunow
Navicula angustata W.Sm.
Navicula appendiculata (C.Agardh) Kütz.
Navicula arvensis Hust.
Navicula atomus (Kütz.) Grunow
Navicula atomus var. permitis (Hust.) Lange-Bert.
Navicula atomus var. recondita (Hust.) Lange-Bert.
Navicula aurora Sovereign
Navicula bacillaris Greg.
Navicula bacilliformis Grunow
Navicula bacillum Ehrenb.
Navicula bacillium Ehrenb. [orthographic error]
Navicula bacillus [orthographic error]
Navicula balcanica Hust.
Navicula begeri Krasske
Navicula bicapitata Lagerst.
Navicula bicapitellata Hust.
Navicula bicephala Hust.
Navicula bicontracta Østrup
Navicula binodis Ehrenb.
Navicula brebissonii Kütz.
Navicula bryophila J.B.Peters.
Navicula campylogramma Ehrenb.
Navicula canalis R.M.Patrick
Navicula capitata Ehrenb.
Navicula capitata var. hungarica (Grunow) Ross
Navicula capitata var. linearis (Østrup) Stoermer & Kreis
Navicula capitata var. lueneburgensis (Grunow) R.M.Patrick
Navicula capitata var. lueneburgensis fo. elegans Østrup
Navicula capitata var. lunenbergensis fo. elegans Østrup [orthographic error]
Navicula capitatoradiata Germain
Navicula capsa Hohn
Navicula cardinalis Ehrenb.
Navicula cari Ehrenb. (see note 22)
Navicula cari var. angusta Grunow
Navicula caroliniana R.M.Patrick
Navicula cascadensis Sovereign
Navicula castutata [Orthographic error]
Navicula certa Hust. (non F.Meister 1934)
Navicula cincta (Ehrenb.) Ralfs
Navicula cincta var. rostrata C.W.Reimer
Navicula circumtexta F.Meister
Navicula citrus Krasske
Navicula clamans Hust.
Navicula clementis Grunow
Navicula clementis var. linearis Brander
Navicula clementis var. quadristigmata Mang.
Navicula clementoides Hust.
Navicula cocconeiformis Greg. ex Grev.
Navicula confervacea (Kütz.) Grunow
Navicula confervacea var. peregrina (W.Sm.) Grunow
Navicula constans var. symmetrica Hust.
Navicula contenta Grunow
Navicula contenta var. biceps (Arn. ms., Grunow in VanHeurck) Cleve
Navicula contraria R.M.Patrick
Navicula costulata Grunow in Cleve & Grunow
Navicula costuloides Skvortzov
Navicula crucicula (W.Sm.) Donk.
Navicula cryptocefalsa Lange-Bert.
Navicula cryptocephala Kütz.
Navicula cryptocephala var. exilis (Kütz.) Grunow
Navicula cryptocephala var. intermedia VanHeurck
Navicula cryptocephala var. lancettula (Schum.) Grunow
Navicula cryptocephala var. veneta (Kütz.) Rabenh.
Navicula cryptocephaloides Hust.
Navicula cryptotenella Lange-Bert.
Navicula cuspidata (Kütz.) Kütz.
Navicula cuspidata var. ambigua (Ehrenb.) Cleve
Navicula cuspidata var. major F.Meister
Navicula declivis Hust.
Navicula decussis Østrup
Navicula densestriata Hust.
Navicula detenta Hust.
Navicula dicephala Ehrenb.
Navicula dicephala var. abiskonensis (Hust.) A.Cleve
Navicula dicephala var.elginensis (Greg.) Cleve
Navicula dilata Ehrenb.
Navicula diluviana Krasske
Navicula disputans R.M.Patrick
Navicula dissipata Hust.
Navicula distinctastriata Hohn & Hellerm.
Navicula divergens(W.Sm.) Ralfs
Navicula dubia Ehrenb.
Navicula dulcis Krasske
Navicula elegans W.Sm.
Navicula elginensis (Greg.) Ralfs
Navicula elginensis var. lata (M.Perag.) R.M.Patrick
Navicula elginensis var. neglecta (Krasske) R.M.Patrick
Navicula elginensis var. rostrata (A.Mayer) R.M.Patrick
Navicula elliptica Kütz.
Navicula elliptica var. minutissima Grunow
Navicula excelsa Krasske
Navicula exigua (Greg.) Grunow
Navicula exigua var. capitata R.M.Patrick
Navicula exiguiformis Hust.
Navicula exiguoides Hust.
Navicula exilis Kütz.
Navicula explanata Hust.
Navicula farta Hust.
Navicula festiva Krasske
Navicula fracta Hust.
Navicula gastriformis Hust.
Navicula gastrum (Ehrenb.) Kütz.
Navicula gastrum var. signata Hust.
Navicula gibba (Ehrenb.) Kütz.
Navicula gibbosa Hust.
Navicula globiceps Greg.
Navicula globosa F.Meister
Navicula goeppertiana (Bleisch) H.L.Smith
Navicula gottlandica Grunow
Navicula gracilis Ehrenb.
Navicula gracilis var. schizonemoides VanHeurck
Navicula graciloides A.Mayer
Navicula graciloides A.Mayer sensu Hust.
Navicula gregaria Donk.
Navicula grimmei Krasske
Navicula gysingensis Foged
Navicula halophila (Grunow) Cleve
Navicula halophila fo. tenuirostris Hust.
Navicula hambergii Hust.
Navicula hantzschia [orthographic error]
Navicula hassiaca Krasske
Navicula hasta Pant.
Navicula helensis Schulz
Navicula hemiptera Kütz.
Navicula heufleri Grunow
Navicula heufleri var. leptocephala (Bréb.) R.M.Patrick
Navicula hitchcockii Ehrenb.
Navicula hungarica Grunow
Navicula hungarica var. capitata (Ehrenb.) Cleve
Navicula hungarica var. linearis Østrup
Navicula hustedtii Krasske
Navicula hustedtii fo. obtusa (Hust.) Hust. (see note 23)
Navicula imbricata Bock
Navicula importuna Hust.
Navicula incerta Grunow
Navicula inflata Donk.
Navicula inflexa (Greg.) Ralfs
Navicula ingenua Hust.
Navicula ingrata Krasske
Navicula insignita Hust.
Navicula insociabilis Krasske
Navicula insociabilis var. dissipatoides Hust.
Navicula integra (W.Sm.) Ralfs
Navicula interglacialis Hust.
Navicula intractata Hust.
Navicula iridis Ehrenb.
Navicula iridis var. affinis VanHeurck
Navicula iridis var. amphigomphus Ehrenb.
Navicula iridis var. amphirhynchus Ehrenb.
Navicula iridis var. firma W.Sm.
Navicula iridis var. producta W.Sm.
Navicula jaagii F.Meister
Navicula jaernefeltii Hust.
Navicula jarnfeldtii Hust. [Orthographic error]
Navicula jentzschii Grunow
Navicula kotschyi Grunow (see note 24)
Navicula krasskei Hust.
Navicula kriegeri Krasske
Navicula lacunarum Grunow
Navicula lacustris Greg.
Navicula laevissima Kütz.
Navicula ladogensis Cleve
Navicula laevissima Kütz.
Navicula lanceolata (C.Agardh) Kütz. (see note 25)
Navicula lanceolata var. cymbula (Donk.) Cleve
Navicula lanceolata var. tenuirostris Skvortzov
Navicula latens Krasske
Navicula lateropunctata Wallace
Navicula laterostrata Hust.
Navicula lenzii Hust.
Navicula levanderi Hust.
Navicula limosa Kütz.
Navicula limosa var. gibberula (Kütz.) Grunow
Navicula limosa var. subinflata Grunow
Navicula limosa var. undulata Grunow
Navicula longa Ralfs
Navicula longirostris Hust. (see note 26)
Navicula lundstroemii Cleve
Navicula lundstromii (no authority cited), [orthographic error]
Navicula luzonensis Hust.
Navicula maculata Hust.
Navicula major Kütz.

Pinnularia major (Kütz.) Rabenh.
Navicula maxima Greg.
Navicula mediocris Krasske
Navicula menisculoides Hust.
Navicula menisculus Schum.
Navicula menisculus var. krenneri A.Cleve
Navicula menisculus var. obtusa Hust.
Navicula menisculus var. upsaliensis (Grunow in Cleve & Grunow) Grunow in VanHeurck
Navicula meniscus Schum.
Navicula mesolepta Ehrenb.
Navicula mesolepta var. ? Ehrenb. [nom. illegit.]
Navicula micropupula Choln.
Navicula minima Grunow
Navicula minimavar. okamurae Skvortzov
Navicula minnewaukonensis Elmore
Navicula minuscula Grunow
Navicula minuscula var. alpestris Hust.
Navicula minusculoides Hust.
Navicula monoculata Hust.
Navicula muraliformis Hust.
Navicula muralis Grunow
Navicula mutica Kütz.
Navicula mutica var. cohnii (Hilse) Grunow
Navicula mutica var. nivalis (Ehrenb.) Hust.
Navicula mutica var. tropica Hust.
Navicula mutica var. undulata (Hilse) Grunow
Navicula muticoides Hust.
Navicula muticopsis VanHeurck
Navicula neoventricosa Hust.
Navicula nobilis (Ehrenb.) Kütz.
Navicula notha Wallace
Navicula nyassensis O.Müll.
Navicula nyassensis fo. minor O.Müll.
Navicula obdurata Hohn & Hellerm.
Navicula oblonga (Kütz.) Kütz.
Navicula oblongum var. subcapitata Pant.
Navicula odiosa Wallace
Navicula omissa Hust.
Navicula opportuna Hust.
Navicula oppugnata Hust.
Navicula ordinaria Hust.
Navicula paanaensis A.Cleve
Navicula paca Hohn & Hellerm.
Navicula paludosa Hust.
Navicula parva Ralfs
Navicula paucivisitata R.M.Patrick
Navicula pelliculosa Hilse
Navicula peratomus Hust.
Navicula peregrina (Ehrenb.) Kütz.
Navicula permitis Hust.
Navicula perpusilla (Kütz.) Grunow
Navicula perrotettii (Grunow) Cleve
Navicula perrotettii var. enervis Hust.
Navicula placenta Ehrenb.
Navicula placentula (Ehrenb.) Kütz.
Navicula placentula var. rostrata A.Mayer
Navicula platycephala O.Müll.
Navicula platystoma Ehrenb.
Navicula platystoma var. pantocsekii Wislouch & Kolbe
Navicula porifera var. opportuna (Hust.) Lange-Bert. in Krammer & Lange-Bert.
Navicula potzgeri C.W.Reimer
Navicula praeterita Hust.
Navicula praterita [orthographic error]
Navicula producta W.Sm.
Navicula protracta (Grunow) Cleve
Navicula protracta var. elliptica Gallik
Navicula protracta fo. subcapitata (Wislouch & V.S.Poretzsky) Hust.
Navicula pseudanglica Lange-Bert.
Navicula pseudobacillum Grunow
Navicula pseudoclementis Hust.
Navicula pseudomuralis Hust.
Navicula pseudoreinhardtii R.M.Patrick
Navicula pseudoscutiformis Hust.
Navicula pseudoventralis Hust.
Navicula punctata Donk.
Navicula pupla [orthographic error]
Navicula pupula Kütz.
Navicula pupula var. aquaeductae (Krasske) Hust.
Navicula pupula var. bacillariodes Grunow
Navicula pupula var. capitata Hust.
Navicula pupula var. elliptica Hust.
Navicula pupula var. mutata (Krasske) Hust.
Navicula pupula var. rectangularis (W.Greg.) Grunow
Navicula pupula var. rostrata Hust.
Navicula pusilla W.Sm.
Navicula pygmaea Kütz.
Navicula pygmaea var. producta [nom. nud.]
Navicula quadripartita Hust.
Navicula radiosa Kütz.
Navicula radiosa var. intermedia [nom. nud.]
Navicula radiosa var. parva Wallace
Navicula radiosa var. tenella (Bréb.ex Kütz.) Grunow in VanHeurck
Navicula radiosafallax Lange-Bert.
Navicula recondita Torka
Navicula reinhardtii Grunow
Navicula reinhardtii var. elliptica Hérib.
Navicula rhomboides Grunow
Navicula rhynchocephala Kütz.
Navicula rhynchocephala var. amphiceros (Kütz.) Grunow
Navicula rhynchocephala var. germainii (Wallace) R.M.Patrick
Navicula rhynchocephala var. germanii (Wallace) R.M.Patrick [orthographic error]
Navicula rhyncocephala Kütz. [orthographic error]
Navicula rhynchotella Lange-Bert.
Navicula rostellata Kütz.
Navicula rotaeana (Rabenh.) Grunow
Navicula rotaeana var. excentrica Grunow
Navicula rotunda Hust.
Navicula sabiniana R.M.Patrick
Navicula salinarum Grunow
Navicula salinarum var. intermedia (Grunow) Cleve
Navicula saugerii Desm.
Navicula schmassmannii Hust.
Navicula schoenfeldii Hust.
Navicula schroeteri var. escambia R.M.Patrick
Navicula schumanniana Grunow
Navicula sculpta Ehrenb.
Navicula scutelloides W.Sm.
Navicula scutiformis Grunow
Navicula secreta Pant.
Navicula secura R.M.Patrick
Navicula semen Ehrenb. Navicula semenoides Hust.
Navicula seminuloides Hust.
Navicula seminulum Grunow
Navicula seminulum var. hustedtii R.M.Patrick
Navicula seminulum var. intermedia Hust.
Navicula serians Kütz.
Navicula sigma Ehrenb.
Navicula similis Krasske
Navicula simplex Krasske
Navicula skabitschewskyi Sabelina
Navicula smithii Bréb.
Navicula sovereignae Hust.
Navicula sphaerophora Kütz.
Navicula splendicula VanLand.
Navicula staurifera Thomas
Navicula stauroptera var. parva (Ehrenb.) Grunow (see note 27)
Navicula stroemii Hust.
Navicula stroesei (Østrup) A.Cleve
Navicula subbacillum Hust.
Navicula subclementis Hust.
Navicula subcostulata Hust.
Navicula subgastriformis Hust.
Navicula subhalophila Hust.
Navicula subhamulata Grunow in VanHeurck
Navicula subhamulata var. undulata Hust.
Navicula submitis Hust.
Navicula submuralis Hust.
Navicula subocculta Hust.
Navicula subocculata Hust. [orthographic error]
Navicula subrhynchocephala Hust.
Navicula subrotundata Hust.
Navicula subrotundata fo. lanceolata Hust.
Navicula subseminulum Hust.
Navicula subsulcata Hust.
Navicula subtilissima Cleve
Navicula symmetrica R.M.Patrick
Navicula tabellaria (Ehrenb.) Kütz.
Navicula tantula Hust.
Navicula tecta Krasske
Navicula tenella (Bréb.) VanHeurck
Navicula tenera Hust.
Navicula termes Ehrenb. (see note 28)
Navicula terminata Hust.
Navicula texana R.M.Patrick
Navicula tridentula Krasske
Navicula tridentula var. parallela Krasske
Navicula trinodis Lewis
Navicula tripunctata (O.F.Müll.) Bory
Navicula tripunctata var. cuneata (Lauby) Stoermer & Yang
Navicula tripunctata var. schizonemoides (VanHeurck) R.M.Patrick
Navicula trochus Schum. (non. Ehrenb. 1838)
Navicula tumida W.Sm.(see note 29)
Navicula tuscula Ehrenb.
Navicula tuscula var. angulata Hust.
Navicula tuscula fo. minor Hust.
Navicula tuscula fo. obtusa Hust.
Navicula tuscula fo. rostrata Hust.
Navicula tuscula var. rostrata Hust.
Navicula vanheurckii R.M.Patrick
Navicula varians Greg.
Navicula variostriata Krasske
Navicula vaucheriae J.B.Peters.
Navicula ventosa Hust.
Navicula ventralis Krasske
Navicula ventralis fo. simplex Hust.
Navicula verecundaHust.
Navicula viridis(Nitzsch.) Ehrenb.
Navicula viridula(Kütz.) Ehrenb.
Navicula viridula var. avenacea (Bréb.) VanHeurck
Navicula viridula var. germainii (Wallace) Lange-Bert.
Navicula viridula var. linearis Hust.
Navicula viridula var. rostellata (Kütz.) Cleve
Navicula viridula var. tenella [orthographic error]
Navicula vitabunda Hust.
Navicula vulpina Kütz.
Navicula vulpina var. avenacea (Van Heurck) R.M.Patrick
Navicula wittrockii (Lagerst.) Temp. & M.Perag.
Navicula zanoni Hust.
Navicula zanoii Hust. [orthographic error]

Neidium affine (Ehrenb.) Pfitz.
Neidium affine var. amphirhynchus ( Ehrenb.) Cleve
Neidium affine var. capitata Mölder
Neidium affine var. ceylonicum ( Skvortsov) C.W.Reimer
Neidium affine var. hankense (Skvortsov) C.W.Reimer
Neidium affine var. humerus C.W.Reimer
Neidium affinevar. undulatum (Grunow) Cleve
Neidium amphigomphus (Ehrenb.) Pfitz.
Neidium ampliatum (Ehrenb.) Krammer in Krammer & Lange-Bert.
Neidium apiculatum C.W.Reimer
Neidium binode (Ehrenb.) Hust.
Neidium bisulcatum (Lagerst.) Cleve
Neidium bisulcatum var. baicalense (Skvortsov & K.I.Mey.) C.W.Reimer
Neidium bisulcatum var. undulatum O. Müll.
Neidium bisulcatum var. subundulatum (Grunow) C.W.Reimer in Patrick & Reimer
Neidium calvum Østrup
Neidium dilatatum (Ehrenb.) Cleve
Neidium distincte-punctatum Hust.
Neidium dubium (Ehrenb.) Cleve
Neidium dubium fo. constrictum (Hust.) Hust.
Neidium hankensis Skvortsov
Neidium hitchcockii (Ehrenb.) Cleve
Neidium iridis (Ehrenb.) Cleve
Neidium iridis var. amphigomphus (Ehrenb.) A.Mayer
Neidium iridis var. ampliatum (Ehrenb.) Cleve
Neidium iridis var. amplicata (Ehrenb.) Cleve [orthographic error]
Neidium iridis var. vernalis Reich.
Neidium kozlowi Meresch.
Neidium kozlowi var. baicalensis fo. robusta Stoermer
Neidium kozolwi Meresch. [orthographic error]
Neidium ladogense (Cleve) Stoermer & Yang
Neidium levanderi (Hust.) Lange-Bert. & Metzeltin in Lange-Bert.
Neidium mirum Krasske
Neidium productum (W.Sm.) Cleve
Neidium sacoense C.W.Reimer
Neidium temperei C.W.Reimer

Nitzschia accomodata Hust.
Nitzschia acicularioides Hust.
Nitzschia acicularioides sensu R.E.M.Archibald non Hust. 1930
Nitzschia acicularis (Kütz.) W.Sm.
Nitzschia acidoclinata Lange-Bert.
Nitzschia actinastroides (Lemm.) Van Goor
Nitzschia acula Hantzsch ex Cleve & Grunow
Nitzschia acuminata (W.Sm.) Grunow
Nitzschia acuta Cleve
Nitzschia adapta Hust.
Nitzschia agnewii Choln.
Nitzschia agnita Hust.
Nitzschia amphibia Grunow
Nitzschia amphibia var. fossilis Grunow
Nitzschia amphibia var. frauenfeldii Grunow
Nitzschia amphicephala Grunow
Nitzschia amphioxoides Hust.
Nitzschia amphioxys (Ehrenb.) W.Sm.
Nitzschia angustata (W.Sm.) Grunow
Nitzschia angustata var. acuta Grunow
Nitzschia angustatula Lange-Bert.
Nitzschia apiculata (Greg.) Grunow
Nitzschia archibaldii Lange-Bert.
Nitzschia bacata Hust.
Nitzschia bacata fo. linearis Hust.
Nitzschia bremensis Hust.
Nitzschia brevirostris Hust.
Nitzschia bulnheimiana (Rabenh.) H.L.Sm.
Nitzschia capitellata Hust.
Nitzschia circumsuta (Bail.) Grunow
Nitzschia clausii Hantzsch
Nitzschia closterium (Ehrenb.) W.Sm.
Nitzschia communis Rabenh.
Nitzschia communis var. abbreviata Grunow
Nitzschia commutata Grunow
Nitzschia confinis Hust.
Nitzschia debilis (Arn.) Grunow in Cleve & Grunow
Nitzschia delicatissima Cleve
Nitzschia denticula Grunow
Nitzschia diserta Hust.
Nitzschia dissidua [orthographic error]
Nitzschia dissipata (Kütz.) Grunow
Nitzschia dissipata var. borneensis Hust.
Nitzschia dissipata var. media (Hantzsch) Grunow
Nitzschia dissipata fo. undulata Sovereign
Nitzschia draveillensis Coste & Ricard
Nitzschia dubia W.Sm.
Nitzschia elegens Hust.
Nitzschia epiphytica Hust.
Nitzschia epiphyticoides Hust.
Nitzschia fasciculata Grunow
Nitzschia filiformis (W.Sm.) VanHeurck
Nitzschia filiformis var. conferta (Richart) Lange-Bert.
Nitzschia flexa Schum.
Nitzschia fluminenesis Grunow
Nitzschia fonticola Grunow
Nitzschia fonticola var. capitata A.Cleve
Nitzschia fonticola var. pelagica Hust.
Nitzschia fonticoloides Sovereign
Nitzschia frustulum (Kütz.) Grunow
Nitzschia frustulum (Kütz.) Grunow sensu Lange-Bert.
Nitzschia frustulum var. minuta Grunow in VanHeurck [orthographic error]
Nitzschia frustulum var. minutula Grunow in Van Heurck
Nitzschia frustulum var. perminuta Grunow
Nitzschia frustulum var. perpusilla (Rabenh.) Grunow
Nitzschia frustulum var. subsalina Hust.
Nitzschia frustulum var. tenella Grunow
Nitzschia gandersheimiensis Krasske
Nitzschia gessneri Hust.
Nitzschia graciliformis Lange-Bert. & Simonsen
Nitzschia gracilis Hantzsch
Nitzschia graciloides Hust. (see note 30)
Nitzschia hantzschiana Rabenh.
Nitzschia hantzschschiana [orthographic error]
Nitzschia heufleriana Grunow
Nitzschia heufleuriana Grunow [orthographic error]
Nitzschia hollerupensis Foged
Nitzschia holsatica Hust.
Nitzschia homburgiensis Lange-Bert.
Nitzschia hungarica Grunow
Nitzschia ignorata Krasske
Nitzschia impressa Hust.
Nitzschia inconspicua Grunow
Nitzschia incurvata var. lorenziana Ross
Nitzschia innominata Sovereign
Nitzschia insecta Hust.
Nitzschia intermedia Hantzsch
Nitzschia interrupta (Reich.) Hust.
Nitzschia kuetzingiana Hilse
Nitzschia kuetzingiana var. exilis Grunow
Nitzschia kuetzingioides Hust.
Nitzschia kutzingiana Hilse [orthographic error]
Nitzschia lacunarum Hust.
Nitzschia lacuum Lange-Bert.
Nitzschia lanceolatae [orthographic error]
Nitzschia lauenburgiana Hust.
Nitzschia laurenburgiana Hust. [orthographic error]
Nitzschia levidensis (W.Sm.) Grunow
Nitzschia linearis (C. Agardh) W.Sm.
Nitzschia linearis var. tenuis (Kütz.) Grunow
Nitzschia liskipata [orthographic error]
Nitzschia longissima (Bréb.) Ralfs
Nitzschia longissima var. closterium (W.Sm.) VanHeurck
Nitzschia longissima var. reversa Grunow
Nitzschia longissima fo. parva Grunow (see note 31)
Nitzschia lorenziana Grunow
Nitzschia luzonensis Hust.
Nitzschia macilenta Greg.
Nitzschia mediocris Hust.
Nitzschia microcephala Grunow
Nitzschia minutula Grunow
Nitzschia obsidialis Hust.
Nitzschia obtusa W.Sm.
Nitzschia obtusa var. scalpelliformis Grunow
Nitzschia ovalis Arn.
Nitzschia palea (Kütz.) W.Sm.
Nitzschia palea var. debilis (Kütz.) Grunow
Nitzschia palea var. sumatrana Hust.
Nitzschia palea var. tenuirostris Grunow (see note 31)
Nitzschia paleacea Grunow
Nitzschia paleoides Hust.
Nitzschia paradoxa (Gmelin) Grunow
Nitzschia paradoza [orthographic error]
Nitzschia parvula W.Sm.
Nitzschia parvula var. terricola Lund
Nitzschia perminuta (Grunow) M. Perag.
Nitzschia philippinarum Hust.
Nitzschia planctonica Hust.
Nitzschia pseudoamphioxys Hust.
Nitzschia pseudoatomus Stoermer [nom. nud.]
Nitzschia pseudofonticola Hust.
Nitzschia pumila Hust. [cf. Lange-Bert.]
Nitzschia pura Hust.
Nitzschia pusilla Grunow
Nitzschia pusilla (Kütz.) Grunow emend. Lange-Bert.
Nitzschia radicula Hust.
Nitzschia recta Hantzsch
Nitzschia romana Grunow
Nitzschia rostellata Hust.
Nitzschia scalaris (Ehrenb.) W.Sm.
Nitzschia sicula var. migrans (Cleve) Hasle
Nitzschia sigma (Kütz.) W.Sm.
Nitzschia sigma var. diminuta Grunow
Nitzschia sigma var. rigida (Kütz.) Grunow
Nitzschia sigma var. sigmatella (Greg.) Grunow
Nitzschia sigmoidea (Nitzsch.) W.Sm.
Nitzschia sinuata W.Sm.
Nitzschia sinuata var. delognei (Grunow) Lange-Bert.
Nitzschia sinuata var. tabellaria (Grunow) Grunow
Nitzschia sociabilis Hust.
Nitzschia sphaerophora A.Cleve
Nitzschia spiculoides Hust.
Nitzschia spiculum Hust.
Nitzschia stagnorum Rabenh.
Nitzschia stricta Hust.
Nitzschia subacicularis Hust.
Nitzschia subamphioxoides Hust.
Nitzschia subcapitellata Hust.
Nitzschia sublinearis Hust.
Nitzschia subrostrata Hust.
Nitzschia subrostroides Choln.
Nitzschia subtilis (Kütz.) Grunow
Nitzschia subtilis var. paleacea Grunow
Nitzschia tabellaria Grunow
Nitzschia tarda Hust.
Nitzschia tenuis W.Sm.
Nitzschia thermalis (Ehrenb.) Auersw.
Nitzschia thermalis var. intermedia Grunow
Nitzschia thermalis var. minor Hilse
Nitzschia tropica Hust.
Nitzschia tryblionella Hantzsch in Rabenh.
Nitzschia tryblionella var. debilis (Arn.) A. Mayer
Nitzschia tryblionella var. levidensis (W.Sm.) Grunow
Nitzschia tryblionella var. victoriae Grunow
Nitzschia valdestriata Aleem & Hust.
Nitzschia vulga Choln.
Nitzschia vermicularis (Kütz.) Hantzsch
Nitzschia vexans Grunow
Nitzschia vitrea Norman
Nitzschia woltereckii Hust.

Odontidium hymale [orthograhic error]
Odontidium mutabile W.Sm.

Oestrupia bicontracta (Østrup) Lange-Bert. & Krammer
Oestrupia zachariasi (Reich.) Hust.
Oestrupia zachariasi var. undulata (Schultz) Stoermer & Yang

Opephora ansata Hohn & Hellerm.
Opephora martyi Hérib.
Opephora pinnata Ehrenb.

Orthosira dickiei Thwaites

Pinnularia abaujensis(Pant.) Ross
Pinnularia abaujensis var. linearis (Hust.) R.M.Patrick
Pinnularia abaugensis var. rostrata (R.M.Patrick) R.M.Patrick [orthographic error]
Pinnularia abaujensis var. rostrata (R.M.Patrick) R.M.Patrick
Pinnularia abaujensis var. subundulata (A.Mayer) R.M.Patrick
Pinnularia acrosphaeria W.Sm.
Pinnularia amphioxys Ehrenb.
Pinnularia appendiculata (C.Agardh) Cleve
Pinnularia biceps Greg.
Pinnularia biceps fo. petersenii Ross
Pinnularia borealis Ehrenb.
Pinnularia borealis var. rectangularis Carlson
Pinnularia brandelii Cleve
Pinnularia braunii (Grunow) Cleve
Pinnularia braunii var. amphicephala (A.Mayer) Hust.
Pinnulari