The indexes below are provided to help you navigate this long annotated list.
    Instructions: The letters refer to the first letters of the names of the genera used in this summary.
                          Clicking on the letter will take you to the first entry for the genus or genera that begins with that letter.

    CENTRIC DIATOMS:
         A / C / M / P / R / S / T / U

    PENNATE DIATOMS (without raphes)
         A / C / D / F / H / M / P / S / T

    PENNATE DIATOMS (with raphes)
         A / B / C / D / E / F / G / H / K / L / M / N / P / R / S / T
 

CENTRIC DIATOMS — Coscinodiscophyceae
    (15 genera; 48 species, varieties, or forms)

Acanthoceras zachariasii (Brun) Simons.
Actinocyclus normanii f. subsalsa (Juhl.-Dannf.) Hust.
Aulacoseira ambigua (Grun.) Simons.
Aulacoseira distans (Ehr.) Simons.
    Aulacoseira distans var. alpigena (Grun.) Simons.
    Aulacoseira distans var. lirata f. lacustris (Grun.) Simons.
Aulacoseira granulata (Ehr.) Simons.
    Aulacoseira granulata var. angustissima (O. Müll.) Simons.
        Aulacoseira granulata var. angustissima f. curvata (Grun.) comb. nov.?
        Aulacoseira granulata var. angustissima f. spiralis (Hust.) Czarn. & Reinke
Aulacoseira italica (Ehr.) Simons.
    Aulacoseira italica var. tenuissima (Grun.) Simons.

Chaetoceros muelleri Lemm.
Coscinodiscus lacustris Grun.
Coscinodiscus rothii (Ehr.) Grun.
Cyclostephanos dubius (Fricke) Round
Cyclostephanos invisitatus (Hohn & Hellerm.) Ther., Stoerm., & Håk.
Cyclotella antigua W. Sm.
Cyclotella atomus Hust.
Cyclotella catenata (Brun) Bachm.
Cyclotella distinguenda Hust.
Cyclotella krammeri Håk.
Cyclotella meneghiniana Kütz.
    Cyclotella meneghiniana var. laevissima (van Goor) Hust.
Cyclotella michiganiana Skv.
Cyclotella radiosa (Grun.) Lemm.
Cyclotella stelligera Cl. & Grun.
    Cyclotella stelligera var. glomerata (Bachm.) Haw. & Hurley
    Cyclotella stelligera var. pseudostelligera (Hust.) Haw. & Hurley
    Cyclotella stelligera var. stelligeroides (Hust.) Haw. & Hurley
Cyclotella striata (Kütz.) Grun.
    Cyclotella striata var. bipunctata Fricke

Melosira binderana Kütz.
Melosira undulata (Ehr.) Kütz.
Melosira varians Ag.

Pleurosira laevis (Ehr.) Compère

Rhizosolenia

Skeletonema potamos (Weber) Hasle
Stephanodiscus alpinus Hust.
Stephanodiscus hantzschii Grun.
    Stephanodiscus hantzschii f. tenuis (Hust.) Håk. & Stoerm.
Stephanodiscus minutula (Kütz.) Round
Stephanodiscus niagarae Ehr.
Stephanodiscus rotula (Kütz.) Hendey
Stephanopyxis broschii Grun.

Thalassiosira pseudonana (Hust.) Hasle & Heimdal
Thalassiosira weisflogii (Grun.) Fryxell & Hasle

Urosolenia sp.

PENNATE DIATOMS without raphes — Fragilariophyceae
    (17 genera; 67 species, varieties, or forms)

Amphicampa mirabilis Ehr. ex Ralfs
Asterionella formosa Hass.
    Asterionella formosa var. gracillima (Hantz.) Grun.

Catacombas gaillonii (Bory) Will. & Round
Ctenophora pulchella (Ralfs ex Kütz.) Will. & Round
    Ctenophora pulchella var. lacerata (Hust.) comb. nov.?
    Ctenophora pulchella var. lanceolata (O’Meara) comb. nov.?

Diatoma hiemale (Roth) Heib.
Diatoma tenue Ag.
Diatoma vulgare Bory

Fragilaria capucina Desm.
    Fragilaria capucina var. mesolepta Rab.
Fragilaria crotonensis Kitton
Fragilaria fragilarioides (Grun.) Choln.?
Fragilaria incisa (Boyer) L.-Bert.
Fragilaria minuscula (Grun.) Will. & Round
Fragilaria radians (Kütz.) Will. & Round
Fragilaria rostrata Ehr.
Fragilaria tenera (W. Sm.) L.-Bert.
Fragilaria turgens Ehr.
Fragilaria vaucheriae (Kütz.) Peters.
    Fragilaria vaucheriae var. capitellata (Grun.) Patr.
Fragilariforma virescens (Ralfs) Will. & Round
    Fragilariforma virescens var. mesolepta (Ralfs) And., Stoerm., & Kreis

Hannaea arcus (Ehr.) Patr.

Meridion circulare (Grev.) Ag.
Meridion constrictum Ralfs

Pseudostaurosira brevistriata (Grun.) Will. & Round
    Pseudostaurosira brevistriata var. inflata (Pant.) Edlund

Staurosira construens Ehr.
    Staurosira construens var. binodis (Ehr.) Ham.
    Staurosira construens var. venter (Ehr.) Ham.
Staurosirella dubia (Grun.) Morales
Staurosira elliptica (Schum.) Will. & Round
Staurosirella lapponica (Grun.) Will. & Round
Staurosirella leptostauron (Ehr.) Will. & Round
Staurosirella martyi (Hérib.) Morales
Staurosirella pinnata (Ehr.) Will. & Round
    Staurosirella pinnata var. intercedens (Grun.) comb. nov.?
Staurosirella subcapitata (Freng.) Morales
Synedra acus Kütz.
Synedra acuta Ehr.
Synedra amphicephala Kütz.
Synedra capitata Ehr.
Synedra cyclopum Brutschy
Synedra delicatissima W. Sm.
Synedra filiformis var. exilis Cl.-Eul.
Synedra goulardi Bréb.
Synedra nana Meist.
Synedra parasitica (W. Sm.) Hust.
    Synedra parasitica var. subconstricta (Grun.) Hust.
Synedra rumpens var. meneghiniana Grun. = ? (other Synedra rumpens varieties transferred to Fragilaria and Tabularia)
Synedra superba Kütz.
Synedra ulna (Nitz.) Ehr.
    Synedra ulna var. aequalis (Kütz.) Brun
    Synedra ulna var. amphirhynchus (Ehr.) Grun.
    Synedra ulna var. biceps (Kütz.) Kirchn.
    Synedra ulna var. chaseana Thomas
    Synedra ulna var. contracta Østr.
    Synedra ulna var. danica (Kütz.) V.H.
    Synedra ulna var. ramesi (Herib.) Hust.
    Synedra ulna var. spathulifera Hust.
    Synedra ulna var. subaequalis (Grun.) V.H.

Tabellaria fenestrata (Lyngb.) Kütz.
Tabellaria flocculosa (Roth) Kütz.
Tabularia familiaris (Kütz.) comb. nov.?
Tabularia fasciculata (Ag.) Will. & Round
Tabularia tabulata (Ag.) Snoeijs
Tetracyclus lacustris Ralfs

PENNATE DIATOMS WITH RAPHES — Bacillariophyceae
    (52 genera; 592 species, varieties, or forms)

Achnanthes breviceps var. intermedia (Kütz.) Cl.
Achnanthes chlidanos Hohn & Hellerm.
Achnanthes coarctata (Bréb.) Grun.
Achnanthes deflexa Reim.
Achnanthes gibberula Grun.
Achnanthes hudsonis Grun.
Achnanthes inflata (Kütz.) Grun.
Achnanthes pinnata Hust.
Achnanthes trinodis (W. Sm.) Grun.
Achnanthidium affine (Grun.) Czarn.
Achnanthidium biasolettianum (Grun.) Round & Bukht.
Achnanthidium exiguum (Grun.) comb. nov.?
    Achnanthidium exiguum var. constrictum (Grun.) And., Stoerm., & Kreis
    Achnanthidium exiguum var. heterovalvum (Krasske) comb. nov.?
Achnanthidium exilis (Kütz.) Round & Bukht.
Achnanthidium microcephalum Kütz.
Achnanthidium minutissimum (Kütz.) Czarn.
Amphipleura pellucida (Kütz.) Kütz.
Amphora acutiuscula Kütz.
Amphora coffeiformis (Ag.) Kütz.
Amphora copulata (Kütz.) Schoem. & Arch.
Amphora javanica A.S.
Amphora montana Krasske
Amphora normanii Rab.
Amphora ovalis (Kütz.) Kütz.
Amphora pediculus (Kütz.) Grun.
Amphora terroris Ehr.
Amphora veneta Kütz.
Aneumastus tuscula (Ehr.) D. Mann & Stickle
Anomoeoneis costata (Kütz.) Hust.
Anomoeoneis sphaerophora (Ehr.) Pfitz.
    Anomoeoneis sphaerophora var. sculpta O. Müll.

Bacillaria paradoxa Gmel.
Brachysira exilis (Kütz.) Round & Mann
Brachysira serians (Bréb. ex Kütz.) Round & Mann
Brachysira vitrea (Grun.) Ross

Caloneis amphisbaena (Bory) Cl.
    Caloneis amphisbaena var. subsalina (Donk.) Cl.
Caloneis bacillaris var. thermalis (Grun.) A. Cl.
Caloneis bacillum (Grun.) Cl.
Caloneis hebes (Ralfs) Patr.
Caloneis lewisii Patr.
    Caloneis lewisii var. inflata (Schul.) Patr.
Caloneis limosa (Kütz.) Patr.
Caloneis linearis (Grun.) Boyer
Caloneis oregonica (Ehr.) Patr.
Caloneis permagna (J.W. Bail.) Cl.
Caloneis ventricosa (Ehr.) Meist.
    Caloneis ventricosa var. alpina (Cl.) Patr.
    Caloneis ventricosa var. minuta (Grun.) Patr.
    Caloneis ventricosa var. subundulata (Grun.) Patr.
    Caloneis ventricosa var. truncatula (Grun.) Meist.
Campylodiscus clypeus Ehr.
Campylodiscus hibernicus Ehr.
Campylodiscus noricus Ehr.
Cavinula cocconeiformis (Greg. ex Grun.) D. Mann & Stickle
Cavinula jaerenfeltii (Hust.) D. Mann & Stickle
Cavinula lacustris (Greg.) D. Mann & Stickle
Cavinula variostriata (Krasske) D. Mann
Cocconeis diminuta Pant.
Cocconeis disculus (Schum.) Cl.
Cocconeis fluviatilis Wall.
Cocconeis mexicana Ehr.
Cocconeis pediculus Ehr.
Cocconeis placentula Ehr.
    Cocconeis placentula var. euglypta (Ehr.) Cl.
    Cocconeis placentula var. lineata (Ehr.) V.H.
Cocconeis rugosa Sov.
Cocconeis striata Ehr.
Craticula accomoda (Hust.) D. Mann
Craticula ambigua (Ehr.) D. Mann
Craticula cuspidata (Kütz.) D. Mann
    Craticula cuspidata var. major (Meist.) comb. nov.?
Craticula halophila (Grun.) D. Mann
    Craticula halophila f. robusta (Hust.) comb. nov.?
    Craticula halophila f. tenuirostris (Hust.) comb. nov.?
Cylindrotheca gracilis (Bréb. ex Kütz.) Grun.
Cymatopleura elliptica (Bréb.) W. Sm.
    Cymatopleura elliptica f. spiralis Boyer
    Cymatopleura elliptica var. nobilis (Hantzsch) Hust.
Cymatopleura solea (Bréb.) W. Sm. [= Cymatopleura librile (Ehr. ) Pant.?]
    Cymatopleura solea var. apiculata (W. Sm.) Ralfs. [= Cymatopleura librile (Ehr. ) Pant.?]
    Cymatopleura solea var. regula (Ehr.) Grun. [= Cymatopleura librile (Ehr. ) Pant.?]
Cymbella aequalis W. Sm.
Cymbella affinis Kütz.
Cymbella amphicephala Naeg. ex Kütz.
Cymbella angustata (W. Sm.) Cl.
Cymbella aspera (Ehr.) H. Perag.
Cymbella australica (A.S.) Cl.
Cymbella brehmii Hust.
Cymbella cistula (Ehr.) Kirchn.
Cymbella cuspidata Kütz.
Cymbella cymbiformis Ag.
    Cymbella cymbiformis var. nonpunctata Font.
Cymbella delicatula Kütz.
Cymbella hauckii V.H.
Cymbella helvetica Kütz.
Cymbella hustedtii Krasske
Cymbella inaequalis (Ehr.) Rab.
Cymbella laevis Naeg. ex Kütz.
Cymbella lanceolata (Ag.) Ag.
    Cymbella lanceolata var. cornuta (Ehr.) Grun.
Cymbella lata Grun.
Cymbella leptoceros (Ehr.) Kütz.
Cymbella mexicana (Ehr.) Cl.
    Cymbella mexicana var. janischii (A.S.) Reim.
Cymbella microcephala Grun.
Cymbella naviculiformis Auersw. ex Heib.
Cymbella pusilla Grun.
Cymbella rupicola Grun.
Cymbella ruttneri Hust.
Cymbella subaequalis Grun.
Cymbella tumida (Bréb. ex Kütz.) V.H.
Cymbella tumidula Grun. ex A.S.
Cymbella turgidula Grun.

Denticula elegans Kütz.
    Denticula elegans var. kittoniana (Grun.) DeT.
Denticula tenuis Kütz.
    Denticula tenuis var. frigida (Kütz.) Grun.
Denticula thermalis Kütz.
Diadesmis confervacea Kütz.
Diadesmis contenta (Grun.) D. Mann
Diadesmis peregrina W. Sm.
Diploneis elliptica (Kütz.) Cl.
Diploneis fusca var. hyperborea (Grun.) Hust.
Diploneis interrupta (Kütz.) Cl.
Diploneis marginestriata Hust.
Diploneis oblongella (Naeg. ex Kütz.) Ross
Diploneis oculata (Bréb.) Cl.
Diploneis pseudovalis Hust.
Diploneis puella (Schum.) Cl.
Diploneis smithii (Bréb. ex W. Sm.) Cl.
    Diploneis smithii var. pumila (Grun.) Hust.

Encyonema lunatum (W. Sm.) V.H.
Encyonema minutum (Hilse ex Rab.) D. Mann
    Encyonema minutum f. latens (Krasske) comb. nov.?
Encyonema muelleri (Hust.) D. Mann
Encyonema prostratum (Berk.) Kütz.
    Encyonema prostratum var. auerswaldii (Rab.) comb. nov.?
Encyonema silesiacum (Bleisch ex Rab.) D. Mann
Encyonema triangulum (Ehr.) Kütz.
Encyonema turgidum (Greg.) Grun. ex A.S.
Entomoneis alata (Ehr.) Ehr.
Entomoneis ornata (Bail.) Reim.
Entomoneis paludosa (W. Sm.) Reim.
    Entomoneis paludosa var. duplex (Donk.) Czarn. & Reinke
Entomoneis pulchra (Bail.) Reim.
Entomoneis robusta (McCall) Reim.
Epithemia adnata (Kütz.) Bréb.
    Epithemia adnata var. minor (Perag. & Herib.) Patr.
    Epithemia adnata var. porcellus (Kütz.) Patr.
    Epithemia adnata var. proboscidea (Kütz.) Patr.
    Epithemia adnata var. saxonica (Kütz.) Patr.
Epithemia argus (Ehr.) Kütz.
    Epithemia argus var. alpestris Grun.
Epithemia ocellata (Ehr.) Kütz.
Epithemia sorex Kütz.
Epithemia turgida (Ehr.) Kütz.
    Epithemia turgida var. granulata (Ehr.) Grun.
    Epithemia turgida var. zebrina (Ehr.) Rab.
Eucocconeis lapponica var. ninckei (Guerm. & Mang.) Edlund
Eunotia arcus Ehr.
Eunotia curvata (Kütz.) Lagerst.
Eunotia diodon Ehr.
Eunotia fallax A. Cl.
Eunotia glacialis Meist.
Eunotia incisa W. Sm. ex Greg.
Eunotia maior (W. Sm.) Rab.
Eunotia monodon Ehr.
Eunotia naegelii Migula
Eunotia nodosa Ehr.
Eunotia parallela Ehr.
Eunotia pectinalis (O. Müll.) Rab.
    Eunotia pectinalis var. minor (Kütz.) Rab.
    Eunotia pectinalis var. ventricosa Grun.
Eunotia perpusilla Grun.
Eunotia septentrionalis Østr.
Eunotia valida Hust.

Fallacia insociabilis (Krasske) D. Mann
Fallacia pygmaea (Kütz.) Stickle & D. Mann
Fallacia subhamulata (Grun.) D. Mann
Fallacia tenera (Hust.) D. Mann
Frustulia interposita (Lewis) Cl.
Frustulia rhomboides (Ehr.) DeT.
    Frustulia rhomboides var. amphipleuroides (Grun.) Cl.
    Frustulia rhomboides var. capitata (A. Mayer) Patr.
    Frustulia rhomboides var. saxonica (Rab.) DeT.
Frustulia vulgaris (Thw.) DeT.

Gomphoneis eriense (Grun.) Skv. & Meyer
Gomphoneis exigua (Kütz.) Medlin
Gomphoneis herculeana (Ehr.) Cl.
    Gomphoneis herculeana var. robusta (Grun.) Cl.
Gomphonema abbreviatum Ag.
Gomphonema acuminatum Ehr.
Gomphonema affine Kütz.
    Gomphonema affine var. insigne (Greg.) Andr.
Gomphonema angustatum (Kütz.) Rab.
    Gomphonema angustatum var. intermedia Grun.
    Gomphonema angustatum var. obtusatum (Kütz.) Grun.
    Gomphonema angustatum var. productum Grun.
    Gomphonema angustatum var. sarcophagus (Greg.) Grun.
Gomphonema apicatum Ehr.
Gomphonema apuncta Wall.
Gomphonema augar Ehr.
Gomphonema brasiliense Grun.
Gomphonema clevei Fricke
Gomphonema consector Hohn & Hellerm.
Gomphonema dichotomum Kütz.
Gomphonema gracile Ehr. emend V.H.
    Gomphonema gracile var. longicolle Ehr.
Gomphonema grunowii Patr.
Gomphonema helveticum Brun
Gomphonema intricatum Kütz.
    Gomphonema intricatum var. vibrio (Ehr.) Cl.
Gomphonema montanum Schum.
Gomphonema olivaceum (Lyngb.) Kütz.
    Gomphonema olivaceum var. calcarea (Cl.) Cl.
Gomphonema parvulum (Kütz.) Kütz.
Gomphonema semiapterum Grun.
Gomphonema simus Hohn & Hellerm.
Gomphonema sphaerophorum Ehr.
Gomphonema subclavatum (Grun.) Grun.
    Gomphonema subclavatum var. commutatum (Grun.) A. Mayer
    Gomphonema subclavatum var. mexicanum (Grun.) Patr.
Gomphonema subtile Ehr.
Gomphonema tenellum Kütz.
Gomphonema tergestinum (Grun.) Fricke
Gomphonema truncatum Ehr.
    Gomphonema truncatum var. capitatum (Ehr.) Patr.
    Gomphonema truncatum var. clavatum (Ehr.) comb. nov.?
Gomphonema validum Cl.
Gomphonema ventricosum Greg.
Gyrosigma acuminatum (Kütz.) Rab.
Gyrosigma attenuatum (Kütz.) Rab.
    Gyrosigma attenuatum var. scalprum (Gaillon) Ralfs
Gyrosigma euhippus Sterr. & Ross
Gyrosigma eximium (Thw.) Boyer emend Sterr.
Gyrosigma fasciola (Ehr.) Griff. & Henfr.
Gyrosigma macrum (W. Sm.) Griff. & Henfr.
Gyrosigma obtusatum (Sulliv. & Wormley) Boyer
Gyrosigma sciotense (Sulliv. & Wormley) Cl.
Gyrosigma spencerii var. curvula (Grun.) Reim.? [status needs to be reassessed (Sterrenburg 1995:476-477)]

Hantzschia amphioxys (Ehr.) Grun.
    Hantzschia amphioxys f. capitata O. Müll.
    Hantzschia amphioxys var. vivax Grun.
Hantzschia spectabilis (Ehr.) Hust.
Hantzschia virgata (Roper) Grun.

Karayevia clevei (Grun.) Round & Bukht.

Lemnicola hungarica (Grun.) Round & Basson
Luticola cohnii (Hilse) D. Mann
Luticola goeppertiana (Bleisch ex Rab.) D. Mann
Luticola mutica (Kütz.) D. Mann
Luticola stigma (Patr.) comb. nov.?
Luticola tropica (Hust.) comb. nov.?
Luticola undulata (Hilse) D. Mann
Luticola ventricosa (Kütz.) D. Mann

Mastogloia danseii Thw. ex W. Sm.
Mastogloia elliptica (Ag.) Cl.
Mastogloia pumila (Grun.) Cl.
Mastogloia smithii Thw. ex W. Sm.
    Mastogloia smithii var. amphicephala Grun.
    Mastogloia smithii var. lacustris Grun.

Navicula agma Hohn & Hellerm.
Navicula aikenensis Patr.
Navicula ammophila var. flanatica (Grun.) Cl.
Navicula amphibola Cl.
Navicula anglica Ralfs
    Navicula anglica var. subsalsa (Grun.) Cl.
Navicula angusta Grun.
Navicula arenaria Donk.
Navicula arvensis Hust.
Navicula asellus Weigold ex Hust.
Navicula atomus (Kütz.) Grun.
Navicula bergenensis Hohn
Navicula bicephala Hust.
Navicula biconica Patr.
Navicula canalis Patr.
Navicula cancellata var. retusa (Bréb.) Cl.
Navicula capitata Ehr.
    Navicula capitata var. hungarica (Grun.) Ross
Navicula capitatoradiata Germain ex Gasse
Navicula cincta (Ehr.) Ralfs
Navicula circumtexta Meist. ex Hust.
Navicula citrus Krasske
Navicula crucicula (W. Sm.) Donk.
Navicula cryptocephala Kütz.
    Navicula cryptocephala f. minuta Peters.
    Navicula cryptocephala var. exilis (Kütz.) Grun.
    Navicula cryptocephala var. veneta (Kütz.) Rab.
Navicula decussis Østr.
Navicula demissa Hust.
Navicula digitoradiata (Greg.) Ralfs
Navicula elmorei Patr.
Navicula excelsa Krasske
Navicula exilissima Grun.
Navicula falaisiensis Grun.
Navicula festiva Krasske
Navicula gastrum (Ehr.) Kütz.
Navicula gottlandica Grun.
Navicula graciloides A. Mayer
Navicula gregaria Donk.
Navicula grimmei Krasske
Navicula guatemalensis Cl. & Grev.
Navicula gysingensis Foged
Navicula hambergii Hust.
Navicula heufleri Grun.
    Navicula heufleri var. leptocephala (Bréb. ex Grun.) Perag.
Navicula hustedtii Krasske
Navicula ilopangoensis Hust.
Navicula integra (W. Sm.) Ralfs
Navicula lanceolata (Ag.) Kütz.
    Navicula lanceolata var. cymbula (Donk.) Cl.
Navicula latens Krasske
Navicula longa (Greg.) Ralfs
Navicula longirostris Hust.
Navicula luzonensis Hust.
Navicula menisculus Schum.
    Navicula menisculus var. obtusa Hust.
    Navicula menisculus var. upsaliensis (Grun.) Grun.
Navicula minima Grun.
Navicula miniscula Grun.
Navicula minnewaukonensis Elm.
Navicula molesta Krasske
Navicula muralis Grun.
Navicula notha Wall.
Navicula oblonga (Kütz.) Kütz.
Navicula odiosa Wall.
Navicula palpebralis Bréb. ex W. Sm.
Navicula paucivisitata Patr.
Navicula pelliculosa (Bréb. ex Kütz.) Hilse
Navicula peregrina (Ehr.) Kütz.
Navicula protracta Grun.
Navicula pseudoreinhardtii Patr.
Navicula radiosa Kütz.
    Navicula radiosa var. parva Wall.
    Navicula radiosa var. tenella (Bréb. ex Kütz.) Grun.
Navicula reinhardtii (Grun.) Grun.
Navicula rhyncocephala Kütz.
    Navicula rhyncocephala var. amphiceros (Kütz.) Grun.
    Navicula rhyncocephala var. germainii (Wall.) Patr.
Navicula sabiniana Patr.
Navicula salinarum Grun.
Navicula santaecrucis Østr.
Navicula schoenfeldii Hust.
Navicula schroeteri var. escambia Patr.
Navicula scutum Schum.
Navicula secreta Patr.
    Navicula secreta var. apiculata Patr.
Navicula secura Patr.
Navicula semen Ehr. emend Donk.
Navicula simplex Krasske
Navicula subfasciata Patr.
Navicula subinflata Grun.
Navicula subtilissima Cl.
Navicula symmetrica Patr.
Navicula tantula Hust.
Navicula tenelloides Hust.
Navicula texana Patr.
Navicula tridentula Krasske
Navicula tripunctata (O. Müll.) Bory
    Navicula tripunctata var. schizonemoides (V.H.) Patr.
Navicula vaucheriae Peters.
Navicula viridula (Kütz.) Kütz. emend V.H.
    Navicula viridula var. argunensis Skv.
    Navicula viridula var. avenacea (Bréb. ex Grun.) V.H.
    Navicula viridula var. linearis Hust.
    Navicula viridula var. rostellata (?Kütz.) Cl.
    Navicula viridula var. rostrata Skv.
Navicula vulpina Kütz.
Neidium affine (Ehr.) Pfitz.
    Neidium affine var. amphirhynchus (Ehr.) Cl.
Neidium ampliatum (Ehr.) Kramm.
Neidium binode (Ehr.) Hust.
Neidium bisulcatum (Lagerst.) Cl.
    Neidium bisulcatum var. baicalense (Skv. & Meyer) Reim.
Neidium dilatatum (Ehr.) Cl.
Neidium dubium (Ehr.) Cl.
    Neidium dubium f. constrictum Hust.
Neidium hercynicum f. subrostratum Wall.
Neidium iridis (Ehr.) Cl.
    Neidium iridis var. amphigomphus (Ehr.) A. Mayer
Neidium productum (W. Sm.) Cl.
Nitzschia acicularis (Kütz.) W. Sm.
Nitzschia amphibia Grun.
Nitzschia angularis W. Sm.
Nitzschia brebissonii W. Sm.
Nitzschia brevissima Grun.
Nitzschia capitellata Hust.
Nitzschia clausii Hantz.
Nitzschia closterium (Ehr.) W. Sm.
Nitzschia communis Rab.
Nitzschia commutatoides L.-Bert.
Nitzschia denticula Grun.
Nitzschia dissipata (Kütz.) Grun.
Nitzschia dubia W. Sm.
Nitzschia elegans Hust.
Nitzschia elliptica Hust.
Nitzschia entomon (Ehr.) Ralfs
Nitzschia epiphytica O. Müll.
Nitzschia fasciculata Grun.
Nitzschia filiformis (W. Sm.) V.H.
Nitzschia flexa Schum.
Nitzschia fonticola Grun.
Nitzschia frustulum (Kütz.) Grun.
    Nitzschia frustulum var. perminuta Grun.
    Nitzschia frustulum var. perpusilla (Rab.) Grun.
Nitzschia gracilis Hantz.
Nitzschia hantzschiana Rab.
Nitzschia heufleriana Grun.
Nitzschia holsatica Hust.
Nitzschia homburgiensis L.-Bert.
Nitzschia ignorata Krasske
Nitzschia intermedia Hantz.
Nitzschia invicta f. lanceolata Hust.
Nitzschia lanceolata W. Sm.
Nitzschia linearis W. Sm.
    Nitzschia linearis var. tenuis (W. Sm.) Grun.
Nitzschia lorenziana Grun.
    Nitzschia lorenziana var. subtilis Grun.
Nitzschia microcephala Grun.
Nitzschia obtusa W. Sm.
Nitzschia palea (Kütz.) W. Sm.
    Nitzschia palea var. debilis (Kütz.) Grun.
Nitzschia paleacea (Grun.) Grun.
Nitzschia pseudoamphioxys Hust.
Nitzschia recta Hantz. ex Rab.
Nitzschia reversa W. Sm.
Nitzschia romana Grun.
Nitzschia scapelliformis (Grun.) Grun.
Nitzschia sigma (Kütz.) W. Sm.
Nitzschia sigmoidea (Nitzsch) W. Sm.
Nitzschia sinuata var. tabellaria (Grun.) Grun.
Nitzschia subacicularis Hust.
Nitzschia subcapitellata Hust.
Nitzschia sublinearis Hust.
Nitzschia subtilis Grun.
Nitzschia subtiloides Hust.
Nitzschia suchlandtii Hust.
Nitzschia tarda Hust.
Nitzschia tropica Hust.
Nitzschia umbonata (Ehr.) L.-Bert.
Nitzschia valdestriata Aleem & Hust.
Nitzschia vermicularis (Kütz.) Hantz.
Nitzschia vitrea Norm.
    Nitzschia vitrea var. salinarum Grun.

Peronia fibula (Bréb. ex Kütz.) Ross

NOTE: Krammer (1992) proposed taxonomic changes for several European taxa in the genus Pinnularia. These changes make the status of many taxa reported from the United States uncertain. Incorporating these changes here at this time would add to the confusion this list attempts to clarify, so the changes proposed by Krammer (1992) have not been noted. The reader should consult Krammer’s publication. Also, Round et al. (1990) suggested that the genera Pinnularia and Caloneis cannot stand as we now know them. More taxonomic changes are likely.

Reimeria sinuata (Greg.) Koc. & Stoerm.
Rhoicosphenia curvata (Kütz.) Grun. ex Rab.
Rhopalodia gibba (Ehr.) O. Müll.
    Rhopalodia gibba var. parallela (Grun..) H. & M. Perag.
    Rhopalodia gibba var. ventricosa (Kütz.) H. & M. Perag.
Rhopalodia gibberula (Ehr.) O. Müll.
    Rhopalodia gibberula var. vanheurckii O. Müll.
Rhopalodia musculus (Kütz.) O. Müll.

Sellaphora bacillum (Ehr.) D. Mann
Sellaphora laevissima (Kütz.) D. Mann
Sellaphora pupula (Kütz.) Meresch.
    Sellaphora pupula f. minutula (Choln.) comb. nov.?
    Sellaphora pupula var. capitata (Skv. & Meyer) comb. nov.?
    Sellaphora pupula var. elliptica (Hust.) comb. nov.?
    Sellaphora pupula var. mutata (Krasske) comb. nov.?
    Sellaphora pupula var. rectangularis (Greg.) comb. nov.?
Sellaphora seminulum (Grun.) D. Mann
    Sellaphora seminulum var. hustedtii (Patr.) comb. nov.?
Sellaphora vitabunda (Hust.) D. Mann
Stauroneis acuta W. Sm.
Stauroneis anceps Ehr.
    Stauroneis anceps f. gracilis Rab.
    Stauroneis anceps f. linearis (Ehr.) Hust.
    Stauroneis anceps var. americana Reim.
Stauroneis ignorata Hust.
Stauroneis kriegeri Patr.
Stauroneis legumen (Ehr.) Kütz.
Stauroneis nana Hust.
Stauroneis nobilis Schum.
    Stauroneis nobilis var. baconiana (Stodd.) Reim.
Stauroneis palustris Hust.
Stauroneis phoenicenteron (Nitz.) Ehr.
    Stauroneis phoenicenteron f. gracilis (Ehr.) Hust.
Stauroneis producta Grun.
Stauroneis phyllodes Ehr.
Stauroneis smithii Grun.
Stauroneis spicula (Hicke) Grun.
Staurophora wislouchii (Poret. & Anis.) D. Mann
Stenopterobia curvula (W. Sm.) Kramm.
Surirella amphioxys W. Sm.
Surirella angusta Kütz.
Surirella bifrons Ehr.
Surirella biseriata Bréb.
Surirella brebissonii Kramm. & L.-Bert.
Surirella brightwellii W. Sm.
Surirella crumena Bréb.
Surirella delicatissima Lewis
Surirella didyma Kütz.
Surirella elegans Ehr.
Surirella gracilis Grun.
Surirella linearis W. Sm.
    Surirella linearis var. helvetica (Brun) Meist.
Surirella minuta Bréb.
Surirella myodon Ehr.
Surirella nervosa (A.S.) A. Mayer
Surirella ovalis Bréb.
Surirella patella Kütz.
Surirella robusta Ehr.
Surirella saxonica Auersw. ex Rab.
Surirella splendida (Ehr.) Kütz.
Surirella spiralis Kütz.
Surirella striatula Turp.
Surirella tenera Greg.
    Surirella tenera var. palmerii (Boyer) Hust.
    Surirella tenera var. splendidula A.S.

Tryblionella acuta (Cl.) D. Mann
Tryblionella angustata W. Sm.
Tryblionella apiculata Greg.
Tryblionella debilis Arn.
Tryblionella hungarica (Grun.) D. Mann
Tryblionella levidensis W. Sm.
Tryblionella punctata W. Sm.
Tryblionella tryblionella (Hantz.) Proch. = Tryblionella gracilis W. Sm.?
Tryblionella umblicata (Hust.) D. Mann
Tryblionella victoriae Grun.