Limnische Kieselalgen (Bacillariophyta)

German Red List

Hofmann, G.; Lange-Bertalot, H.; Werum, M. & Klee, R. (2018): Rote Liste und Gesamtartenliste der limnischen Kieselalgen (Bacillariophyta) Deutschlands. – In: Metzing, D., Hofbauer, N., Ludwig, G. & Matzke-Hajek, G. (Bearb.): Rote Liste der gefährdeten Tiere, Pflanzen und Pilze Deutschlands. Band 7: Pflanzen. – Bonn (Bundesamt für Naturschutz). – Naturschutz und Biologische Vielfalt 70 (7): 601–708.

Checklist

Scientific name German name Threat Category
A
Acanthoceras zachariasii (Brun) Simonsen Not Threatened
Achnanthes acares M.H. Hohn & Hellerman Data Deficient
Achnanthes acus Simonsen Data Deficient
Achnanthes brevipes C. Agardh var. brevipes Not Threatened
Achnanthes brevipes var. intermedia (Kütz.) Cleve Not Threatened
Achnanthes brockmannii Simonsen Data Deficient
Achnanthes coarctata (Bréb. ex W. Smith) Grunow Data Deficient
Achnanthes curtissima J.R. Carter Data Deficient
Achnanthes danica (Flögel) Grunow Data Deficient
Achnanthes delicatissima Simonsen Data Deficient
Achnanthes diplopunctata Simonsen Data Deficient
Achnanthes exigua Grunow Not Threatened
Achnanthes fogedii Håk. Data Deficient
Achnanthes hintzii Lange-Bert. & Krammer Highly Threatened
Achnanthes inflata (Kütz.) Grunow Extremely Rare
Achnanthes koenigii Simonsen Data Deficient
Achnanthes lacunarum Hust. Highly Threatened
Achnanthes lemmermannii Hust. Data Deficient
Achnanthes lilljeborgii Grunow Data Deficient
Achnanthes longipes C. Agardh Not Threatened
Achnanthes lorenziana Grunow Data Deficient
Achnanthes lutheri Hust. Threatened
Achnanthes marginestriata Simonsen Data Deficient
Achnanthes minuscula Hust. Not Threatened
Achnanthes nodosa Cleve Threatened with Extinction
Achnanthes parvula Kütz. Not Threatened
Achnanthes pseudobliqua Simonsen Data Deficient
Achnanthes rostellata Cleve-Euler Highly Threatened
Achnanthes saxatilis W. Bock Data Deficient
Achnanthes semiaperta Hust. Highly Threatened
Achnanthes stewartii R.M. Patrick Data Deficient
Achnanthes subexigua Hust. Extremely Rare
Achnanthes submarina Hust. Extremely Rare
Achnanthes subsalsa J.B. Petersen Extremely Rare
Achnanthes subsessilis Kütz. Not Threatened
Achnanthes tristis Krasske Extremely Rare
Achnanthidium affine (Grunow) Czarn. Not Threatened
Achnanthidium atomoides O. Monnier, Lange-Bert. & Ector Not Threatened
Achnanthidium caledonicum (Lange-Bert.) Lange-Bert. Threatened
Achnanthidium catenatum (J. Bilý & Marvan) Lange-Bert. Not Threatened
Achnanthidium deflexum (Reimer) J.C. Kingston Data Deficient
Achnanthidium delmontii Pérès et al. Not Threatened
Achnanthidium dolomiticum Cantonati & Lange-Bert. Highly Threatened
Achnanthidium druartii Rimet & Couté Data Deficient
Achnanthidium eutrophilum (Lange-Bert.) Lange-Bert. Not Threatened
Achnanthidium exile (Kütz.) Lange-Bert. & Bukht. Near Threatened
Achnanthidium gracillimum (F. Meister) Lange-Bert. Highly Threatened
Achnanthidium jackii Rabenh. Data Deficient
Achnanthidium kranzii (Lange-Bert.) Round & Bukht. Threatened
Achnanthidium lauenburgianum (Hust.) O. Monnier, Lange-Bert. & Ector Not Threatened
Achnanthidium lineare W. Smith Threat of Unknown Extent
Achnanthidium linearioides (Lange-Bert.) Lange-Bert. Highly Threatened
Achnanthidium macrocephalum (Hust.) Round & Bukht. Data Deficient
Achnanthidium minutissimum (Kütz.) Czarn. var. minutissimum Not Threatened
Achnanthidium minutissimum f. inconspicuum (Østrup) Data Deficient
Achnanthidium nanum (F. Meister) Lange-Bert. Data Deficient
Achnanthidium neomicrocephalum Lange-Bert. & F. Staab Data Deficient
Achnanthidium nollii (O. Bock & W. Bock) Lange-Bert. Extremely Rare
Achnanthidium petersenii Hust. Threatened
Achnanthidium pfisteri Lange-Bert. Data Deficient
Achnanthidium pusillum (Grunow) Lange-Bert. Highly Threatened
Achnanthidium pyrenaicum (Hust.) H. Kobayasi Not Threatened
Achnanthidium rivulare Potapova & Ponader Not Threatened
Achnanthidium rosenstockii (Lange-Bert.) Lange-Bert. var. rosenstockii Highly Threatened
Achnanthidium rosenstockii var. inareolatum Lange-Bert. Highly Threatened
Achnanthidium saprophilum (H. Kobayasi & Mayama) Round & Bukht. Not Threatened
Achnanthidium straubianum (Lange-Bert.) Lange-Bert. Not Threatened
Achnanthidium strictum E. Reichardt Data Deficient
Achnanthidium subatomus (Hust.) Lange-Bert. Near Threatened
Achnanthidium subhudsonis (Hust.) H. Kobayasi Not Threatened
Achnanthidium thienemannii (Hust.) Lange-Bert. Data Deficient
Achnanthidium trinode Ralfs Threatened with Extinction
Achnanthidium zhakovschikovii Potapova Data Deficient
Actinocyclus normanii (Juhl.-Dannf.) Hust. f. normanii Not Threatened
Actinocyclus normanii f. subsalsus (Juhl.-Dannf.) Hust. Not Threatened
Adlafia aquaeductae (Krasske) Lange-Bert. Extremely Rare
Adlafia bryophila (J.B. Petersen) Lange-Bert. Not Threatened
Adlafia langebertalotii O. Monnier & Ector Not Threatened
Adlafia minuscula (Grunow) Lange-Bert. var. minuscula Not Threatened
Adlafia minuscula var. muralis (Grunow) Lange-Bert. Not Threatened
Adlafia parabryophila (Lange-Bert.) Lange-Bert. Data Deficient
Adlafia suchlandtii (Hust.) Lange-Bert. Not Threatened
Amphipleura pellucida (Kütz.) Kütz. Not Threatened
Amphora aequalis Krammer sensu Levkov Threatened
Amphora affinis Kütz. Data Deficient
Amphora aponina (Kütz.) Levkov Not Threatened
Amphora berolinensis N. Abarca & R. Jahn Data Deficient
Amphora calumetica (B.W. Thomas) Perag. Threat of Unknown Extent
Amphora commutata Grunow Not Threatened
Amphora copulata (Kütz.) Schoeman & R.E.M. Archibald Not Threatened
Amphora delicatissima Krasske Not Threatened
Amphora eximia J.R. Carter Extremely Rare
Amphora hemicycla Stoermer & J.J. Yang Not Threatened
Amphora inariensis Krammer Not Threatened
Amphora indistincta Levkov Not Threatened
Amphora lange-bertalotii Levkov & Metzeltin var. lange-bertalotii Data Deficient
Amphora lange-bertalotii var. tenuis Levkov & Metzeltin Data Deficient
Amphora lineolata Ehrenb. Not Threatened
Amphora minutissima W. Smith Data Deficient
Amphora ovalis (Kütz.) Kütz. Not Threatened
Amphora pediculus (Kütz.) Grunow Not Threatened
Amphora stechlinensis Levkov & Metzeltin Threat of Unknown Extent
Amphora strigosa Hust. Not Threatened
Anaulus balticus Simonsen Data Deficient
Aneumastus apiculatus (Østrup) Lange-Bert. Data Deficient
Aneumastus balticus Lange-Bert. Near Threatened
Aneumastus maculosus (Donkin) Lange-Bert. Data Deficient
Aneumastus minor (Hust.) Lange-Bert. Not Threatened
Aneumastus rostratus (Hust.) Lange-Bert. Data Deficient
Aneumastus stroesei (Østrup) D.G. Mann & Stickle Threatened
Aneumastus tuscula (Ehrenb.) D.G. Mann & Stickle Threatened
Anomoeoneis sphaerophora (Ehrenb.) Pfitzer f. sphaerophora Not Threatened
Anomoeoneis sphaerophora f. costata (Kütz.) A.M. Schmid Data Deficient
Anomoeoneis sphaerophora f. sculpta Krammer Data Deficient
Ardissonea crystallina (C. Agardh) Grunow Not Threatened
Astartiella bahusiensis (Grunow) Witkowski, Lange-Bert. & Metzeltin Data Deficient
Astartiella bremeyeri (Hust.) Witkowski, Lange-Bert. & Metzeltin Data Deficient
Asterionella formosa Hassall Not Threatened
Asterionella ralfsii W. Smith var. ralfsii Threat of Unknown Extent
Asterionella ralfsii var. hustedtiana Körner Data Deficient
Aulacoseira alpigena (Grunow) Krammer Threat of Unknown Extent
Aulacoseira ambigua (Grunow) Simonsen Not Threatened
Aulacoseira crassipunctata Krammer Data Deficient
Aulacoseira crenulata (Ehrenb.) Thwaites Threat of Unknown Extent
Aulacoseira distans (Ehrenb.) Simonsen var. distans Threat of Unknown Extent
Aulacoseira distans var. nivalis (W. Smith) E.Y. Haworth Not Threatened
Aulacoseira granulata (Ehrenb.) Simonsen var. granulata Not Threatened
Aulacoseira granulata f. curvata (Hust.) Simonsen Not Threatened
Aulacoseira granulata f. valida (Hust.) Simonsen Not established
Aulacoseira granulata var. angustissima (O. Müll.) Simonsen Not Threatened
Aulacoseira islandica (O. Müll.) Simonsen Not Threatened
Aulacoseira italica (Ehrenb.) Simonsen var. italica Threat of Unknown Extent
Aulacoseira italica var. tenuissima (Grunow) Simonsen Data Deficient
Aulacoseira lacustris (Grunow) Krammer f. lacustris Data Deficient
Aulacoseira lacustris f. tenuior (Grunow) Houk, Klee & Passauer Extremely Rare
Aulacoseira laevissima (Grunow) Krammer Data Deficient
Aulacoseira lirata (Ehrenb.) R. Ross Threat of Unknown Extent
Aulacoseira muzzanensis (F. Meister) Krammer Data Deficient
Aulacoseira perglabra (Østrup) E.Y. Haworth Extremely Rare
Aulacoseira pfaffiana (Reinsch) Krammer Threat of Unknown Extent
Aulacoseira pusilla (F. Meister) Tuji & Houki Not Threatened
Aulacoseira subarctica (O. Müll.) E.Y. Haworth f. subarctica Not Threatened
Aulacoseira subarctica f. recta (O. Müll.) Krammer Data Deficient
Aulacoseira subborealis Denys et al. Not Threatened
Aulacoseira valida (Grunow) Krammer Threat of Unknown Extent
Auliscus sculptus (W. Smith) Brightw. Data Deficient
B
Bacillaria paxillifera (O.F. Müll.) Hendey Not Threatened
Berkeleya rutilans (Trentep.) Grunow Not Threatened
Boreozonacola hustedtii Lange-Bert., Kulikovskiy & Witkowski Highly Threatened
Brachysira aponina Kütz. Near Threatened
Brachysira brebissonii R. Ross Threatened
Brachysira calcicola Lange-Bert. subsp. calcicola Highly Threatened
Brachysira calcicola subsp. pfisteri Lange-Bert. & Werum Data Deficient
Brachysira follis (Ehrenb.) R. Ross Highly Threatened
Brachysira garrensis (Lange-Bert. & Krammer) Lange-Bert. Highly Threatened
Brachysira hofmanniae Lange-Bert. Highly Threatened
Brachysira intermedia (Østrup) Lange-Bert. Highly Threatened
Brachysira liliana Lange-Bert. Highly Threatened
Brachysira neglectissima Lange-Bert. Data Deficient
Brachysira neoexilis Lange-Bert. Not Threatened
Brachysira procera Lange-Bert. & Gerd Moser Highly Threatened
Brachysira serians (Bréb.) Round & D.G. Mann Highly Threatened
Brachysira styriaca (Grunow) R. Ross Highly Threatened
Brachysira vitrea (Grunow) R. Ross Highly Threatened
Brachysira wygaschii Lange-Bert. Highly Threatened
Brachysira zellensis (Grunow) Krammer Highly Threatened
Brockmanniella brockmannii (Hust.) Hasle et al. Data Deficient
C
Caloneis aerophila W. Bock Extremely Rare
Caloneis alpestris (Grunow) Cleve Threat of Unknown Extent
Caloneis amphisbaena (Bory) Cleve f. amphisbaena Not Threatened
Caloneis amphisbaena f. subsalina (Donkin) van der Werff Not Threatened
Caloneis bacillum (Grunow) Cleve Data Deficient
Caloneis bottnica Cleve Highly Threatened
Caloneis budensis (Grunow) Krammer Extremely Rare
Caloneis constans E. Reichardt Extremely Rare
Caloneis fontinalis Lange-Bert. & E. Reichardt Not Threatened
Caloneis lancettula (Schulz-Danzig) Lange-Bert. & Witkowski Not Threatened
Caloneis langebertalotioides E. Reichardt Threat of Unknown Extent
Caloneis latiuscula (Kütz.) Cleve Highly Threatened
Caloneis lauta J.R. Carter & Bailey-Watts Threat of Unknown Extent
Caloneis lepidula (Grunow) Cleve Extremely Rare
Caloneis leptosoma (Grunow) Krammer Threat of Unknown Extent
Caloneis macedonica Hust. Extremely Rare
Caloneis molaris (Grunow) Krammer Not Threatened
Caloneis obtusa (W. Smith) Cleve Threat of Unknown Extent
Caloneis permagna (Bailey) Cleve Data Deficient
Caloneis pulchra Messik. Data Deficient
Caloneis schumanniana (Grunow) Cleve var. schumanniana Threatened
Caloneis schumanniana var. biconstricta auct. non (Grunow) Reichelt Data Deficient
Caloneis silicula (Ehrenb.) Cleve f. silicula Not Threatened
Caloneis silicula f. alpina (Cleve) Krammer Data Deficient
Caloneis silicula f. peisonis (Grunow) Krammer Extremely Rare
Caloneis sublinearis (Grunow) Krammer Data Deficient
Caloneis tenuis (W. Greg.) Krammer Threatened
Caloneis thermalis (Grunow) Krammer Extremely Rare
Caloneis undulata (W. Greg.) Krammer Threatened
Caloneis vasileyevae Lange-Bert., Genkal & Vekhov Extremely Rare
Caloneis westii (W. Smith) Hendey Not Threatened
Campylodiscus bicostatus W. Smith Not Threatened
Campylodiscus clypeus Ehrenb. Not Threatened
Campylodiscus echeneis Ehrenb. Threat of Unknown Extent
Campylodiscus hibernicus Ehrenb. Not Threatened
Campylodiscus levanderi Hust. Threatened
Campylodiscus noricus Ehrenb. Threat of Unknown Extent
Campylosira cymbelliformis (A.W.F. Schmidt) Grunow ex Van Heurck Data Deficient
Capartogramma crucicula (Grunow) R. Ross Extremely Rare
Catenula adhaerens Mereschk. Not Threatened
Cavinula cocconeiformis (W. Greg.) D.G. Mann & Stickle Threat of Unknown Extent
Cavinula intractata (Hust.) Lange-Bert. Highly Threatened
Cavinula jaernefeltii (Hust.) D.G. Mann & Stickle Threatened
Cavinula lapidosa (Krasske) Lange-Bert. Threatened
Cavinula mollicula (Hust.) Lange-Bert. Data Deficient
Cavinula pseudoscutiformis (Hust.) D.G. Mann & Stickle Threatened
Cavinula pusio (Cleve) Lange-Bert. Highly Threatened
Cavinula scutelloides (W. Smith) Lange-Bert. Not Threatened
Cavinula variostriata (Krasske) D.G. Mann Threatened
Chaetoceros muelleri Lemmerm. Data Deficient
Chamaepinnularia amphiborealis Lange-Bert. & Werum Highly Threatened
Chamaepinnularia begeri (Krasske) Lange-Bert. f. begeri Threat of Unknown Extent
Chamaepinnularia begeri f. constricta (Krasske) Lange-Bert. Threat of Unknown Extent
Chamaepinnularia evanida (Hust.) Lange-Bert. Not Threatened
Chamaepinnularia falkiae Lange-Bert. & Werum Highly Threatened
Chamaepinnularia hassiaca (Krasske) Cantonati & Lange-Bert. Threatened
Chamaepinnularia krookiformis (Krammer) Lange-Bert. & Krammer Not Threatened
Chamaepinnularia krookii (Grunow) Lange-Bert. & Krammer Extremely Rare
Chamaepinnularia mediocris (Krasske) Lange-Bert. Near Threatened
Chamaepinnularia muscicola (J.B. Petersen) Kulikovskiy et al. Threatened
Chamaepinnularia soehrensioides Kulikovskiy et al. Threatened with Extinction
Chamaepinnularia soehrensis (Krasske) Lange-Bert. Threatened
Chamaepinnularia submuscicola (Krasske) Lange-Bert. Not Threatened
Chamaepinnularia witkowskii (Lange-Bert. & Metzeltin) Kulikovskiy & Lange-Bert. Threat of Unknown Extent
Cocconeis disculus (Schum.) Cleve Not Threatened
Cocconeis euglypta Ehrenb. Not Threatened
Cocconeis euglyptoides (Geitler) Lange-Bert. Data Deficient
Cocconeis lineata Ehrenb. Not Threatened
Cocconeis neodiminuta Krammer Not Threatened
Cocconeis neothumensis Krammer Not Threatened
Cocconeis pediculus Ehrenb. Not Threatened
Cocconeis placentula Ehrenb. var. placentula Data Deficient
Cocconeis placentula var. intermedia (Hérib. & Perag.) Cleve Data Deficient
Cocconeis placentula var. klinoraphis Geitler Not Threatened
Cocconeis placentula var. rouxii (Hérib. & Brun) Cleve Near Threatened
Cocconeis placentula var. tenuistriata Geitler Data Deficient
Cocconeis pseudolineata (Geitler) Lange-Bert. Not Threatened
Cocconeis pseudothumensis E. Reichardt Threat of Unknown Extent
Cocconeis scutellum Ehrenb. var. scutellum Not Threatened
Cocconeis scutellum f. minuta Cleve Not Threatened
Cocconeis scutellum var. parva (Grunow) Cleve Not Threatened
Cocconeis stauroneiformis (W. Smith) Okuno Not Threatened
Conticribra guillardii (Hasle) K. Stachura-Suchoples & D.M. Williams Data Deficient
Conticribra weissflogii (Grunow) K. Stachura-Suchoples & D.M. Williams Not Threatened
Cosmioneis incognita (Krasske) Lange-Bert. Extremely Rare
Cosmioneis lundstroemii (Cleve) D.G. Mann Not Threatened
Cosmioneis pusilla (W. Smith) D.G. Mann & Stickle Not Threatened
Craticula accomoda (Hust.) D.G. Mann Not Threatened
Craticula acidoclinata Lange-Bert. & Metzeltin Threat of Unknown Extent
Craticula ambigua (Ehrenb.) D.G. Mann Not Threatened
Craticula buderi (Hust.) Lange-Bert. Not Threatened
Craticula citrus (Krasske) E. Reichardt Extremely Rare
Craticula cuspidata (Kütz.) D.G. Mann Not Threatened
Craticula dissociata (E. Reichardt) E. Reichardt Extremely Rare
Craticula halophila (Grunow) D.G. Mann Not Threatened
Craticula halophilioides (Hust.) Lange-Bert. Extremely Rare
Craticula lange-bertalotii E. Reichardt Not Threatened
Craticula minusculoides (Hust.) Lange-Bert. Not Threatened
Craticula molestiformis (Hust.) Lange-Bert. Not Threatened
Craticula riparia (Hust.) Lange-Bert. var. riparia Extremely Rare
Craticula riparia var. mollenhaueri Lange-Bert. Highly Threatened
Craticula submolesta (Hust.) Lange-Bert. Highly Threatened
Craticula vixnegligenda (Lange-Bert.) Lange-Bert. Threat of Unknown Extent
Crenotia angustior (Grunow) Wojtal Data Deficient
Crenotia grimmei (Krasske) Wojtal Data Deficient
Crenotia rumrichorum (Lange-Bert.) Wojtal Data Deficient
Crenotia thermalis (Rabenh.) Wojtal Not Threatened
Ctenophora pulchella (Ralfs) D.M. Williams & Round Not Threatened
Cyclostephanos delicatus (Genkal) Casper & Scheffler Not Threatened
Cyclostephanos dubius (Fricke) Round Not Threatened
Cyclostephanos invisitatus (M.H. Hohn & Hellerman) E.C. Ther. et al. Not Threatened
Cyclotella affinis (Grunow) Houk, Klee & H. Tanaka Data Deficient
Cyclotella atomus Hust. var. atomus Not Threatened
Cyclotella atomus var. gracilis Genkal & K.T. Kiss Not Threatened
Cyclotella austriaca (Perag.) Hust. Data Deficient
Cyclotella balatonis Pant. Data Deficient
Cyclotella bodanica Eulenst. ex Grunow Near Threatened
Cyclotella caspia Grunow Data Deficient
Cyclotella choctawhatcheeana A.K.S. Prasad Data Deficient
Cyclotella comensis Grunow s. str. Threat of Unknown Extent
Cyclotella comensis Morphotyp pseudocomensis "Scheffler" Data Deficient
Cyclotella costei Druart & F. Straub Not Threatened
Cyclotella delicatula Hust. Threat of Unknown Extent
Cyclotella distinguenda Hust. Not Threatened
Cyclotella distinguenda var. mesoleia (Grunow) Håkansson Not established
Cyclotella hinziae Houk et al. Data Deficient
Cyclotella intermedia (Manguin) Houk, Klee & H. Tanaka Data Deficient
Cyclotella iris var. iris Brun & Hérib. Not established
Cyclotella kuetzingiana Thwaites Not Threatened
Cyclotella lemanensis (O. Müll.) Lemmerm. Extinct or Lost
Cyclotella meduanae H. Germ. Not Threatened
Cyclotella meneghiniana Kütz. Not Threatened
Cyclotella ocellata Pant. Not Threatened
Cyclotella plitvicensis Hust. Extremely Rare
Cyclotella praetermissa J.W.G. Lund Data Deficient
Cyclotella radiosa (Grunow) Lemmerm. Data Deficient
Cyclotella rossii Håk. Data Deficient
Cyclotella scaldensis Muylaert & Sabbe Not Threatened
Cyclotella schroeteri Lemmerm. Threatened with Extinction
Cyclotella schumannii (Grunow) Håk. Threat of Unknown Extent
Cyclotella socialis F. Schütt Threatened with Extinction
Cyclotella stelligera var. hyalina Hust. Not established
Cyclotella stelligera var. robusta Hust. Not established
Cyclotella stelligera var. tenuis Hust. Not established
Cyclotella striata (Kütz.) Grunow Not Threatened
Cyclotella stylorum Brightw. Data Deficient
Cyclotella styriaca Hust. Threat of Unknown Extent
Cyclotella tenuistriata Hust. Data Deficient
Cyclotella tripartita Håk. Extremely Rare
Cyclotella wuethrichiana Druart & F. Straub Data Deficient
Cylindrotheca gracilis (Bréb.) Grunow Not Threatened
Cymatopleura elliptica (Bréb.) W. Smith var. elliptica Not Threatened
Cymatopleura elliptica var. hibernica (W. Smith) Van Heurck Not Threatened
Cymatopleura solea (Bréb.) W. Smith var. solea Not Threatened
Cymatopleura solea var. apiculata (W. Smith) Ralfs Not Threatened
Cymatosira belgica Grunow Not Threatened
Cymbella affiniformis Krammer Highly Threatened
Cymbella affinis Kütz. Highly Threatened
Cymbella alpestris Krammer Data Deficient
Cymbella arctica (Lagerst.) A.W.F. Schmidt Threatened
Cymbella aspera (Ehrenb.) Cleve Threat of Unknown Extent
Cymbella austriaca var. erdobenyiana (Pant.) Krammer Not established
Cymbella brehmii Hust. Not established
Cymbella cantonatii Lange-Bert. Data Deficient
Cymbella compacta Østrup Not Threatened
Cymbella cursiformis auct. Not established
Cymbella cymbiformis C. Agardh Threatened
Cymbella dorsenotata Østrup Threat of Unknown Extent
Cymbella excisa Kütz. var. excisa Not Threatened
Cymbella excisa var. procera Krammer Data Deficient
Cymbella excisiformis Krammer Threatened
Cymbella halophila Krammer Extremely Rare
Cymbella hantzschiana Krammer Data Deficient
Cymbella helvetica Kütz. Threatened
Cymbella hofmanniae Lange-Bert. & Krammer Highly Threatened
Cymbella hustedtii Krasske var. hustedtii Threat of Unknown Extent
Cymbella hustedtii var. compacta Krammer Extinct or Lost
Cymbella hustedtii var. rhombica Krammer Threat of Unknown Extent
Cymbella incurvata Krammer Data Deficient
Cymbella kolbei var. angusta Krammer Extremely Rare
Cymbella laevis Nägeli var. laevis Threatened
Cymbella laevis var. lata Krammer Threat of Unknown Extent
Cymbella lancettula (Krammer) Krammer Highly Threatened
Cymbella lange-bertalotii Krammer Not Threatened
Cymbella moelleriana Grunow Data Deficient
Cymbella neocistula Krammer Not Threatened
Cymbella neolanceolata W.J. Silva var. neolanceolata Not Threatened
Cymbella neolanceolata var. bottnica (Krammer) W.J. Silva Data Deficient
Cymbella neoleptoceros Krammer var. neoleptoceros Not Threatened
Cymbella neoleptoceros var. tenuistriata Krammer Not Threatened
Cymbella parva (W. Smith) Kirchn. Threat of Unknown Extent
Cymbella peraspera Krammer Data Deficient
Cymbella percapitata Krammer Threat of Unknown Extent
Cymbella perparva Krammer Threat of Unknown Extent
Cymbella pervarians Krammer Threat of Unknown Extent
Cymbella proxima Reimer Threat of Unknown Extent
Cymbella reinhardtii Grunow Not established
Cymbella schimanskii Krammer Threat of Unknown Extent
Cymbella scotlandica Krammer Threat of Unknown Extent
Cymbella simonsenii Krammer Highly Threatened
Cymbella stigmaphora Østrup Threat of Unknown Extent
Cymbella subaspera Krammer Data Deficient
Cymbella subcistula Krammer Data Deficient
Cymbella subhelvetica Krammer Threatened
Cymbella subheteropleura Krammer Data Deficient
Cymbella subleptoceros Krammer Data Deficient
Cymbella tridentina Cantonati et al. Highly Threatened
Cymbella tumida (Bréb.) Van Heurck Not Threatened
Cymbella vulgata Krammer Threatened
Cymbellafalsa diluviana Krasske Highly Threatened
Cymbellonitzschia diluviana Hust. Highly Threatened
Cymbopleura amphicephala (Nägeli) Krammer Threat of Unknown Extent
Cymbopleura anglica (Lagerst.) Krammer Threat of Unknown Extent
Cymbopleura angustata (W. Smith) Krammer Threatened
Cymbopleura apiculata Krammer Threat of Unknown Extent
Cymbopleura austriaca (Grunow) Krammer Highly Threatened
Cymbopleura citriformis Krammer Extinct or Lost
Cymbopleura citrus (J.R. Carter & Bailey-Watts) Krammer Threatened
Cymbopleura cuspidata (Kütz.) Krammer Threat of Unknown Extent
Cymbopleura diminuta (Grunow) Krammer Threat of Unknown Extent
Cymbopleura elliptica Krammer Threat of Unknown Extent
Cymbopleura florentina Krammer var. florentina Threat of Unknown Extent
Cymbopleura florentina var. brevis Krammer Threat of Unknown Extent
Cymbopleura florentiniformis Krammer Threatened
Cymbopleura frequens Krammer var. frequens Threat of Unknown Extent
Cymbopleura frequens var. rivularis Krammer Threat of Unknown Extent
Cymbopleura frequens var. saxonixa Krammer Threat of Unknown Extent
Cymbopleura geofriedana E. Reichardt Data Deficient
Cymbopleura hercynica (A.W.F. Schmidt) Krammer Data Deficient
Cymbopleura hybrida (Grunow) Krammer var. hybrida Threat of Unknown Extent
Cymbopleura hybrida var. capitata (Fontell) Krammer Threat of Unknown Extent
Cymbopleura inaequaliformis Krammer Data Deficient
Cymbopleura inaequalis (Ehrenb.) Krammer Near Threatened
Cymbopleura inaequilatera (Lagerst.) Krammer Data Deficient
Cymbopleura incerta (Grunow) Krammer var. incerta Threat of Unknown Extent
Cymbopleura incerta var. grunowii Krammer Data Deficient
Cymbopleura incertiformis Krammer var. incertiformis Threat of Unknown Extent
Cymbopleura incertiformis var. inariensis Krammer Threat of Unknown Extent
Cymbopleura incertiformis var. laterostrata Krammer Threat of Unknown Extent
Cymbopleura korana Krammer Data Deficient
Cymbopleura krammeri E. Reichardt var. krammeri Data Deficient
Cymbopleura krammeri var. alpestris (Krammer) E. Reichardt Data Deficient
Cymbopleura krammeri var. pertruncata (Krammer) E. Reichardt Data Deficient
Cymbopleura krammeri var. truncata (Krammer) E. Reichardt Data Deficient
Cymbopleura laeviformis Krammer Threat of Unknown Extent
Cymbopleura lapponica (Grunow) Krammer Highly Threatened
Cymbopleura lata (Grunow) Krammer var. lata Threatened
Cymbopleura lata var. truncata (Grunow) Krammer Threat of Unknown Extent
Cymbopleura metzeltinii Krammer Extremely Rare
Cymbopleura naviculiformis (Auersw.) Krammer Not Threatened
Cymbopleura perstechlinensis Krammer & Metzeltin Highly Threatened
Cymbopleura platycephala (A. Mayer) Krammer Highly Threatened
Cymbopleura rhomboidea Krammer var. rhomboidea Data Deficient
Cymbopleura rhomboidea var. angusta Krammer Data Deficient
Cymbopleura rupicola (Grunow) Krammer var. rupicola Threat of Unknown Extent
Cymbopleura rupicola var. minor Krammer Threat of Unknown Extent
Cymbopleura similiformis Krammer var. similiformis Threat of Unknown Extent
Cymbopleura similiformis var. angusta Krammer Threat of Unknown Extent
Cymbopleura similis (Krasske) Krammer Threat of Unknown Extent
Cymbopleura stechlinensis Krammer Highly Threatened
Cymbopleura subaequalis (Grunow) Krammer Threatened
Cymbopleura subaustriaca Krammer Threat of Unknown Extent
Cymbopleura subcuspidata (Krammer) Krammer Threat of Unknown Extent
Cymbopleura subheteropleura Krammer Threat of Unknown Extent
Cymbopleura sublanceolata Krammer Threat of Unknown Extent
Cymbopleura sublancettula Krammer Threat of Unknown Extent
Cymbopleura tynnii (Krammer) Krammer Highly Threatened
D
Decussata hexagona (Torka) Lange-Bert. Highly Threatened
Decussata placenta (Ehrenb.) Lange-Bert. & Metzeltin Threatened
Delicata apiculata Krammer & Lange-Bert. Highly Threatened
Delicata capitata Krammer Highly Threatened
Delicata delicatula (Kütz.) Krammer var. delicatula Threatened
Delicata delicatula var. alpestris Krammer Threat of Unknown Extent
Delicata delicatula var. angusta Krammer Threat of Unknown Extent
Delicata minuta Krammer Threat of Unknown Extent
Delphineis minutissima (Hust.) Simonsen Not Threatened
Delphineis surirella (Ehrenb.) G.W. Andrews Not Threatened
Delphineis surirelloides (Simonsen) G.W. Andrews Not Threatened
Denticula creticola (Østrup) Lange-Bert. & Krammer Data Deficient
Denticula elegans Kütz. Threat of Unknown Extent
Denticula kuetzingii var. rumrichorum Krammer Data Deficient
Denticula subtilis Grunow Not Threatened
Denticula sundayensis R.E.M. Archibald Not Threatened
Denticula tenuis Kütz. Not Threatened
Denticula thermalis Kütz. Extremely Rare
Denticula valida (Pedicino) Grunow Extremely Rare
Diadesmis confervacea Kütz. Not Threatened
Diadesmis contenta var. biceps (Grunow) P.B. Hamilton Extremely Rare
Diadesmis gallica W. Smith Not Threatened
Diatoma anceps (Ehrenb.) Kirchn. Threat of Unknown Extent
Diatoma ehrenbergii Kütz. Not Threatened
Diatoma hyemalis (Roth) Heib. var. hyemalis Not Threatened
Diatoma hyemalis var. maxima (Grunow) F. Meister Data Deficient
Diatoma mesodon (Ehrenb.) Kütz. Not Threatened
Diatoma moniliformis Kütz. subsp. moniliformis Not Threatened
Diatoma moniliformis subsp. ovalis (Fricke) Lange-Bert. Not Threatened
Diatoma polonica Bąk et al. Data Deficient
Diatoma problematica Lange-Bert. Not Threatened
Diatoma tenuis C. Agardh Not Threatened
Diatoma vulgaris Bory Not Threatened
Diatomella balfouriana Grev. Threat of Unknown Extent
Dickiea soodensis (Krasske) E. Reichardt Not Threatened
Dickiea subinflata (Grunow) D.G. Mann Data Deficient
Didymosphenia geminata (Lyngb.) Mart. Schmidt Not Threatened
Dimeregramma minor (W. Greg.) Ralfs Not Threatened
Diploneis abscondita Lange-Bert. & G. Hofm. Extremely Rare
Diploneis aestuarii Hust. Not Threatened
Diploneis bombus Ehrenb. Not Threatened
Diploneis burgitensis Prudent Threatened
Diploneis calcilacustris Lange-Bert. & Fuhrmann Data Deficient
Diploneis didyma (Ehrenb.) Ehrenb. Not Threatened
Diploneis domblittensis (Grunow) Cleve Highly Threatened
Diploneis elliptica (Kütz.) Cleve var. elliptica Near Threatened
Diploneis fereparma Lange-Bert. & Fuhrmann Extremely Rare
Diploneis fontanella Lange-Bert. Threat of Unknown Extent
Diploneis fontium E. Reichardt & Lange-Bert. Threat of Unknown Extent
Diploneis interrupta (Kütz.) Cleve Not Threatened
Diploneis krammeri Lange-Bert. & E. Reichardt Near Threatened
Diploneis lusatica Lange-Bert. & G. Hofm. Extremely Rare
Diploneis marginestriata Hust. Threatened
Diploneis mauleri (Brun) Cleve Highly Threatened
Diploneis minuta J.B. Petersen Extremely Rare
Diploneis modica Hust. Data Deficient
Diploneis modicahassiaca Lange-Bert. & Fuhrmann Data Deficient
Diploneis oblongella (Nägeli) Cleve-Euler Data Deficient
Diploneis oblongellopsis Lange-Bert. & Fuhrmann Data Deficient
Diploneis oculata (Bréb.) Cleve Not Threatened
Diploneis ovalis (Hilse) Cleve Highly Threatened
Diploneis parma Cleve Extremely Rare
Diploneis petersenii Hust. Threatened
Diploneis pseudovalis Hust. Extremely Rare
Diploneis puella (Schum.) Cleve Data Deficient
Diploneis puellafallax Lange-Bert. & Fuhrmann Extremely Rare
Diploneis separanda Lange-Bert. Data Deficient
Diploneis smithii (Bréb.) Cleve var. smithii Not Threatened
Diploneis smithii var. dilatata (Perag.) W.A. Terry Data Deficient
Diploneis smithii var. pumila (Grunow) Hust. Data Deficient
Diploneis smithii var. rhombica Mereschk. Data Deficient
Diploneis stroemii Hust. Not Threatened
Diploneis tirolensis Lange-Bert. Data Deficient
Discostella glomerata (H. Bachm.) Houk & Klee Not Threatened
Discostella pseudostelligera (Hust.) Houk & Klee Not Threatened
Discostella stelligera (Cleve & Grunow) Houk & Klee Not Threatened
Discostella stelligeroides (Hust.) Houk & Klee Not Threatened
Discostella woltereckii (Hust.) Houk & Klee Data Deficient
E
Ellerbeckia arenaria (Moore) R.M. Crawford Not Threatened
Encyonema aeqilongum Lange-Bert. & Krammer Extremely Rare
Encyonema alpinum (Grunow) D.G. Mann Threat of Unknown Extent
Encyonema auerswaldii Rabenh. Data Deficient
Encyonema bipartitum (A. Mayer) Krammer Data Deficient
Encyonema caespitosum Kütz. var. caespitosum Not Threatened
Encyonema caespitosum var. comensis Krammer Data Deficient
Encyonema caespitosum var. maxima Krammer Extremely Rare
Encyonema carina Lange-Bert. & Krammer Extremely Rare
Encyonema disjunctum E. Reichardt Data Deficient
Encyonema distinctum Lange-Bert. & Krammer Extremely Rare
Encyonema elginense (Krammer) D.G. Mann Highly Threatened
Encyonema gaeumannii (F. Meister) Krammer Threatened
Encyonema hebridicum Grunow Highly Threatened
Encyonema hebridiforme Krammer Threat of Unknown Extent
Encyonema hintzii Krammer Data Deficient
Encyonema hophense Krammer Threatened with Extinction
Encyonema kalbei Krammer Data Deficient
Encyonema kuelbsii Lange-Bert. & Krammer Highly Threatened
Encyonema lacustre (C. Agardh) Mills Near Threatened
Encyonema lange-bertalotii Krammer Not Threatened
Encyonema latens (Krasske) D.G. Mann Extinct or Lost
Encyonema leibleinii (C. Agardh) W.J. Silva et al. Not Threatened
Encyonema lunatum (W. Smith) Van Heurck Data Deficient
Encyonema minutiforme Krammer Data Deficient
Encyonema minutum (Hilse) D.G. Mann Not Threatened
Encyonema neogracile Krammer var. neogracile Threatened
Encyonema neogracile var. tenuipunctatum Krammer Data Deficient
Encyonema neomesianum Krammer Threatened
Encyonema norvegicum (Grunow) Mills var. norvegicum Highly Threatened
Encyonema norvegicum var. alpinum Krammer Highly Threatened
Encyonema obscurum var. alpinum Krammer Threatened
Encyonema parvum Krammer Threat of Unknown Extent
Encyonema paucistriatum (Cleve-Euler) D.G. Mann Highly Threatened
Encyonema pergracile Krammer Threat of Unknown Extent
Encyonema perpusillum (A. Cleve) D.G. Mann Threatened
Encyonema procerum Krammer Threatened with Extinction
Encyonema reichardtii (Krammer) D.G. Mann Not Threatened
Encyonema schimanskii Krammer Threat of Unknown Extent
Encyonema semilanceolatum Krammer Threat of Unknown Extent
Encyonema silesiacum (Bleisch) D.G. Mann var. silesiacum Not Threatened
Encyonema silesiacum var. distigmatum Krammer Extremely Rare
Encyonema silesiacum var. distinctepunctatum Krammer Data Deficient
Encyonema silesiacum var. excisum Krammer Extremely Rare
Encyonema silesiacum var. latareum Krammer Extremely Rare
Encyonema silesiacum var. latestriatum Krammer Extremely Rare
Encyonema silesiacum var. latum Krammer Data Deficient
Encyonema silesiacum var. ventriforme Krammer Data Deficient
Encyonema sublangebertalotii Lange-Bert. & Cantonati Threat of Unknown Extent
Encyonema subnorvegicum Krammer Threat of Unknown Extent
Encyonema triangulum (Ehrenb.) Kütz. Extremely Rare
Encyonema ventricosum (C. Agardh) Grunow Not Threatened
Encyonema vulgare Krammer Threatened
Encyonopsis aequalis (W. Smith) Krammer Highly Threatened
Encyonopsis alpina Krammer & Lange-Bert. Threat of Unknown Extent
Encyonopsis angusta Krammer & Lange-Bert. Threat of Unknown Extent
Encyonopsis cesatiformis Krammer Data Deficient
Encyonopsis cesatii (Rabenh.) Krammer var. cesatii Near Threatened
Encyonopsis cesatii var. geitleri Krammer Data Deficient
Encyonopsis descripta (Hust.) Krammer var. descripta Threat of Unknown Extent
Encyonopsis descripta var. asymmetrica Krammer Extremely Rare
Encyonopsis eifelana Krammer Extremely Rare
Encyonopsis falaisensis (Grunow) Krammer Threat of Unknown Extent
Encyonopsis grunowii Krammer Highly Threatened
Encyonopsis krammeri E. Reichardt Threat of Unknown Extent
Encyonopsis lanceola (Grunow) Krammer Threat of Unknown Extent
Encyonopsis lange-bertalotii Krammer Highly Threatened
Encyonopsis microcephala (Grunow) Krammer Not Threatened
Encyonopsis minuta Krammer & E. Reichardt Data Deficient
Encyonopsis neoamphioxys Krammer Threat of Unknown Extent
Encyonopsis pfisteri Krammer Highly Threatened
Encyonopsis subminuta Krammer & E. Reichardt Threat of Unknown Extent
Encyonopsis thumensis Krammer Threat of Unknown Extent
Encyonopsis tiroliana Krammer & Lange-Bert. Threatened with Extinction
Entomoneis alata (Ehrenb.) Ehrenb. Not Threatened
Entomoneis costata (Hust.) Reimer Not Threatened
Entomoneis ornata (Bailey) Reimer Threat of Unknown Extent
Entomoneis paludosa (W. Smith) Reimer var. paludosa Not Threatened
Entomoneis paludosa var. subsalina Cleve Not Threatened
Eolimna archibaldii J.C. Taylor & Lange-Bert. Data Deficient
Eolimna crassulexigua (E. Reichardt) E. Reichardt Data Deficient
Eolimna elorantana (Lange-Bert.) Lange-Bert. & Kulikovskiy Highly Threatened
Eolimna jurafontinalis (Lange-Bert. & Werum) Lange-Bert. & Kulikovskiy Data Deficient
Eolimna minima (Grunow) Lange-Bert. Not Threatened
Eolimna muraloides (Hust.) Lange-Bert. & Kulikovskiy Data Deficient
Eolimna neocaledonica (Manguin) Lange-Bert. Extremely Rare
Eolimna raederae (Lange-Bert.) Lange-Bert. & Kulikovskiy Threat of Unknown Extent
Eolimna rotunda (Hust.) Lange-Bert. & Kulikovskiy Threat of Unknown Extent
Eolimna schaumburgii (Lange-Bert. & G. Hofm.) Lange-Bert. & Kulikovskiy Data Deficient
Eolimna silvahercynia (Lange-Bert.) Lange-Bert. Threat of Unknown Extent
Eolimna subadnata (Hust.) Lange-Bert. Extremely Rare
Eolimna subminuscula (Manguin) Lange-Bert. Not Threatened
Eolimna submuralis (Hust.) Lange-Bert. & Kulikovskiy Extremely Rare
Eolimna tantula (Hust.) Lange-Bert. Data Deficient
Eolimna utermoehlii (Hust.) Lange-Bert. & Kulikovskiy Not Threatened
Epithemia adnata (Kütz.) Bréb. Not Threatened
Epithemia argus (Ehrenb.) Kütz. var. argus Not Threatened
Epithemia argus var. alpestris (W. Smith) Grunow Threat of Unknown Extent
Epithemia cistula (Ehrenb.) Ralfs Extremely Rare
Epithemia frickei Krammer Near Threatened
Epithemia goeppertiana Hilse Threat of Unknown Extent
Epithemia hyndmanii W. Smith Extremely Rare
Epithemia smithii Carruth. Data Deficient
Epithemia sorex Kütz. var. sorex Not Threatened
Epithemia turgida (Ehrenb.) Kütz. var. turgida Not Threatened
Epithemia turgida var. granulata (Ehrenb.) Brun Not Threatened
Epithemia westermannii (Ehrenb.) Grunow Not Threatened
Eucocconeis alpestris (Brun) Lange-Bert. Highly Threatened
Eucocconeis austriaca (Hust.) Lange-Bert. Highly Threatened
Eucocconeis diluviana (Hust.) Lange-Bert. Extremely Rare
Eucocconeis flexella (Kütz.) Cleve Highly Threatened
Eucocconeis laevis (Østrup) Lange-Bert. Near Threatened
Eucocconeis leptostriata Lange-Bert. Data Deficient
Eucocconeis quadratarea (Østrup) Lange-Bert. Extremely Rare
Eunotia alkalibiontica Lange-Bert. Threatened with Extinction
Eunotia altimontana Lange-Bert. et al. Extremely Rare
Eunotia ambivalens Lange-Bert. & Tagliaventi Threat of Unknown Extent
Eunotia angustior (Grunow) Lange-Bert. & Tagliaventi Extremely Rare
Eunotia arcofallax Lange-Bert. Extremely Rare
Eunotia arcubus Nörpel-Schempp & Lange-Bert. var. arcubus Threatened
Eunotia arcubus var. bidens (Grunow) Lange-Bert. Threatened
Eunotia arculus (Grunow) Lange-Bert. & Nörpel Highly Threatened
Eunotia arcus Ehrenb. Near Threatened
Eunotia bactriana Ehrenb. Threatened with Extinction
Eunotia belgica Van de Vijver & Lange-Bert. Threat of Unknown Extent
Eunotia bertrandii Lange-Bert. & Tagliaventi Threat of Unknown Extent
Eunotia biconstricta (Grunow) Lange-Bert. Threatened with Extinction
Eunotia bidens Ehrenb. Threat of Unknown Extent
Eunotia bigibba Kütz. Highly Threatened
Eunotia bilunaris (Ehrenb.) Schaarschm. Not Threatened
Eunotia boreoalpina Nörpel-Schempp & Lange-Bert. Threat of Unknown Extent
Eunotia boreotenuis Nörpel-Schempp & Lange-Bert. Threat of Unknown Extent
Eunotia botuliformis F. Wild et al. Threat of Unknown Extent
Eunotia braendlei Lange-Bert. & Werum Threatened with Extinction
Eunotia cantonatii Lange-Bert. & Tagliaventi Data Deficient
Eunotia circumborealis Lange-Bert. & Nörpel Threatened with Extinction
Eunotia cisalpina Lange-Bert. & Cantonati Threatened with Extinction
Eunotia curtagrunowii Nörpel-Schempp & Lange-Bert. Threat of Unknown Extent
Eunotia denticulata (Bréb.) Rabenh. Threatened with Extinction
Eunotia diadema Ehrenb. Threatened with Extinction
Eunotia doreofeyukae Lange-Bert. & Kulikovskiy Extremely Rare
Eunotia elegans Østrup Threatened with Extinction
Eunotia eurycephala (Grunow) Nörpel-Schempp & Lange-Bert. Extremely Rare
Eunotia exigua (Bréb.) Rabenh. Not Threatened
Eunotia faba Ehrenb. Threatened with Extinction
Eunotia fallax A. Cleve Data Deficient
Eunotia fennica (Hust.) Lange-Bert. Threat of Unknown Extent
Eunotia flexuosa (Bréb.) Kütz. Highly Threatened
Eunotia formicina Lange-Bert. Threat of Unknown Extent
Eunotia genuflexa Nörpel-Schempp Data Deficient
Eunotia glacialifalsa Lange-Bert. Threat of Unknown Extent
Eunotia glacialis F. Meister Threat of Unknown Extent
Eunotia glacialispinosa Lange-Bert. & Cantonati Threat of Unknown Extent
Eunotia groenlandica (Grunow) Nörpel-Schempp & Lange-Bert. Threat of Unknown Extent
Eunotia hexaglyphis Ehrenb. Threatened with Extinction
Eunotia implicata Nörpel-Schempp et al. Threat of Unknown Extent
Eunotia incisa W. Greg. Threat of Unknown Extent
Eunotia incisadistans Lange-Bert. & Sienk. Threat of Unknown Extent
Eunotia intermedia (Krasske) Nörpel & Lange-Bert. Highly Threatened
Eunotia islandica Østrup Data Deficient
Eunotia juettnerae Lange-Bert. Threat of Unknown Extent
Eunotia kruegeri Lange-Bert. Highly Threatened
Eunotia lapponica Grunow Threatened with Extinction
Eunotia leptopaludosa Lange-Bert. Highly Threatened
Eunotia maior (W. Smith) Rabenh. Highly Threatened
Eunotia meisteri Hust. Threatened
Eunotia meisterioides Lange-Bert. Threat of Unknown Extent
Eunotia mertensiae Lange-Bert. Extremely Rare
Eunotia metamonodon Lange-Bert. Highly Threatened
Eunotia microcephala Krasske Highly Threatened
Eunotia minor (Kütz.) Grunow Near Threatened
Eunotia minutula Grunow Extremely Rare
Eunotia monnieri Lange-Bert. & Tagliaventi Threat of Unknown Extent
Eunotia mucophila (Lange-Bert. & Nörpel) Lange-Bert. Threat of Unknown Extent
Eunotia naegelii Mig. Threatened
Eunotia neoborealis Lange-Bert. Data Deficient
Eunotia neocompacta Mayama var. neocompacta Highly Threatened
Eunotia neocompacta var. vixcompacta Lange-Bert. Threat of Unknown Extent
Eunotia neofallax Nörpel-Schempp & Lange-Bert. Threat of Unknown Extent
Eunotia neoscandinavica Lange-Bert. & Witkowski Highly Threatened
Eunotia nymanniana Grunow Highly Threatened
Eunotia palatina Lange-Bert. & Wolfg. Krüger Highly Threatened
Eunotia paludosa Grunow Near Threatened
Eunotia papiliofalsa Lange-Bert. & Tagliaventi Threat of Unknown Extent
Eunotia paratridentula Lange-Bert. & Kulikovskiy Threatened
Eunotia pectinalis (Kütz.) Rabenh. Threatened
Eunotia praerupta Ehrenb. Highly Threatened
Eunotia pseudogroenlandica Lange-Bert. & Tagliaventi Threat of Unknown Extent
Eunotia pseudopectinalis Hust. Threatened with Extinction
Eunotia renata Lange-Bert. Threatened with Extinction
Eunotia rhomboidea Hust. Threat of Unknown Extent
Eunotia rhynchocephala Hust. Threatened with Extinction
Eunotia ruzickae J. Bilý & Marvan Threat of Unknown Extent
Eunotia satelles (Nörpel & Lange-Bert.) Nörpel-Schempp & Lange-Bert. Threat of Unknown Extent
Eunotia sedina Lange-Bert. et al. Threat of Unknown Extent
Eunotia seminulum Nörpel-Schempp & Lange-Bert. Data Deficient
Eunotia serra Ehrenb. Threatened with Extinction
Eunotia silvahercynia Nörpel et al. Threatened with Extinction
Eunotia soleirolii (Kütz.) Rabenh. Threat of Unknown Extent
Eunotia subarcuatoides Alles et al. Not Threatened
Eunotia subherkiniensis Lange-Bert. Highly Threatened
Eunotia sudetica O. Müll. Highly Threatened
Eunotia superbidens Lange-Bert. Threat of Unknown Extent
Eunotia superpaludosa Lange-Bert. Threatened with Extinction
Eunotia tenella (Grunow) Hust. Threat of Unknown Extent
Eunotia tetraodon Ehrenb. Highly Threatened
Eunotia trinacria Krasske Threatened
Eunotia triodon Ehrenb. Highly Threatened
Eunotia ursamaioris Lange-Bert. & Nörpel Threat of Unknown Extent
Eunotia valida Hust. Threat of Unknown Extent
Eunotia variundulata Nörpel-Schempp & Lange-Bert. Extremely Rare
Eunotogramma marinum (W. Smith) H. Perag. & Perag. Not Threatened
F
Fallacia crassicostata Lange-Bert. & Werum Extremely Rare
Fallacia cryptolyra (C. Brockmann) Stickle & D.G. Mann Not Threatened
Fallacia dissipatoides (Hust.) Metzeltin et al. Data Deficient
Fallacia forcipata (Grev.) Stickle & D.G. Mann Not Threatened
Fallacia fracta (Hust.) D.G. Mann Data Deficient
Fallacia helensis (Schulz-Danzig) D.G. Mann Threat of Unknown Extent
Fallacia indifferens (Hust.) D.G. Mann Extremely Rare
Fallacia insociabilis (Krasske) D.G. Mann Not Threatened
Fallacia lange-bertalotii (E. Reichardt) E. Reichardt Threat of Unknown Extent
Fallacia lenzii (Hust.) Lange-Bert. Not Threatened
Fallacia lucinensis (Hust.) D.G. Mann Threat of Unknown Extent
Fallacia mitis (Hust.) D.G. Mann Data Deficient
Fallacia omissa (Hust.) D.G. Mann Data Deficient
Fallacia pseudoforcipata (Hust.) D.G. Mann Data Deficient
Fallacia pygmaea (Kütz.) Stickle & D.G. Mann subsp. pygmaea Not Threatened
Fallacia pygmaea subsp. subpygmaea Lange-Bert. et al. Not Threatened
Fallacia subhamulata (Grunow) D.G. Mann Not Threatened
Fallacia sublucidula (Hust.) D.G. Mann Not Threatened
Fallacia tenerrima (Hust.) D.G. Mann Extremely Rare
Fallacia vitrea (Østrup) D.G. Mann Threat of Unknown Extent
Fistulifera pelliculosa (Bréb. ex Kütz.) Lange-Bert. Not Threatened
Fistulifera saprophila (Lange-Bert. & Bonik) Lange-Bert. Not Threatened
Fragilaria acidoclinata Lange-Bert. & G. Hofm. Threatened
Fragilaria alpestris Krasske Near Threatened
Fragilaria amphicephaloides Lange-Bert. Threatened
Fragilaria aquaplus Lange-Bert. & S. Ulrich Data Deficient
Fragilaria atomus Hust. Not Threatened
Fragilaria austriaca (Grunow) Lange-Bert. Threat of Unknown Extent
Fragilaria berolinensis (Lemmerm.) Lange-Bert. Not Threatened
Fragilaria biceps (Kütz.) Lange-Bert. Threat of Unknown Extent
Fragilaria bidens Heib. Data Deficient
Fragilaria capucina Desm. var. capucina Not Threatened
Fragilaria cassubica Witkowski & Lange-Bert. Not Threatened
Fragilaria construens f. exigua (W. Smith) Hust. Not Threatened
Fragilaria construens f. subsalina (Hust.) Hust. Not Threatened
Fragilaria crotonensis Kitton subsp. crotonensis Not Threatened
Fragilaria crotonensis subsp. lacus-vulcani Lange-Bert. & S. Ulrich Data Deficient
Fragilaria cyclopum (Brutschy) Lange-Bert. Near Threatened
Fragilaria elliptica Schum. Data Deficient
Fragilaria famelica (Kütz.) Lange-Bert. Not Threatened
Fragilaria gracilis Østrup Not Threatened
Fragilaria grunowii Lange-Bert. & S. Ulrich Not Threatened
Fragilaria heidenii Østrup Data Deficient
Fragilaria henryi Lange-Bert. Not Threatened
Fragilaria hungarica Pant. var. hungarica Data Deficient
Fragilaria hungarica var. tumida Cleve-Euler Data Deficient
Fragilaria incognita E. Reichardt Not Threatened
Fragilaria istvanffyi Pant. Not Threatened
Fragilaria karelica Mölder Data Deficient
Fragilaria lancettula Schum. Not Threatened
Fragilaria lapponica Grunow Threatened
Fragilaria leptostauron (Ehrenb.) Hust. var. leptostauron Not Threatened
Fragilaria leptostauron var. dubia (Grunow) Hust. Not Threatened
Fragilaria longifusiformis subsp. eurofusiformis Lange-Bert. & S. Ulrich Data Deficient
Fragilaria martyi (Hérib.) Lange-Bert. Not Threatened
Fragilaria mesolepta Rabenh. Not Threatened
Fragilaria montana (Krasske) Lange-Bert. Data Deficient
Fragilaria nanoides Lange-Bert. Data Deficient
Fragilaria neoproducta Lange-Bert. Threatened
Fragilaria oldenburgiana Hust. Data Deficient
Fragilaria pantocsekii Cleve-Euler Data Deficient
Fragilaria pararumpens Lange-Bert. et al. Not Threatened
Fragilaria pectinalis (O.F. Müll.) Lyngb. Data Deficient
Fragilaria perdelicatissima Lange-Bert. & Van de Vijver Near Threatened
Fragilaria perminuta (Grunow) Lange-Bert. Not Threatened
Fragilaria pinnata Ehrenb. f. pinnata Not Threatened
Fragilaria pinnata f. subsolitaris (Grunow) A. Mayer Not Threatened
Fragilaria pinnata var. intercedens (Grunow) Hust. Not Threatened
Fragilaria pinnata var. trigona (Brun & Hérib.) Hust. Extremely Rare
Fragilaria polonica Witkowski & Lange-Bert. Data Deficient
Fragilaria polygonata Cleve-Euler Data Deficient
Fragilaria pseudoconstruens Marciniak Threat of Unknown Extent
Fragilaria quadrata (Hust.) Lange-Bert. & Metzeltin Data Deficient
Fragilaria radians (Kütz.) D.M. Williams & Round Not Threatened
Fragilaria recapitellata Lange-Bert. & Metzeltin Not Threatened
Fragilaria reicheltii (M. Voigt) Lange-Bert. Threatened
Fragilaria rumpens (Kütz.) G.W.F. Carlson Not Threatened
Fragilaria saxoplanctonica Lange-Bert. & S. Ulrich Not Threatened
Fragilaria schulzii C. Brockmann Not Threatened
Fragilaria spinarum Lange-Bert. & Metzeltin Extremely Rare
Fragilaria subsalina (Grunow) Lange-Bert. Data Deficient
Fragilaria tenera (W. Smith) Lange-Bert. var. tenera Not Threatened
Fragilaria tenera var. lemanensis Druart et al. Extremely Rare
Fragilaria tenera var. nanana (Lange-Bert.) Lange-Bert. & S. Ulrich Not Threatened
Fragilaria tenuissima Lange-Bert. & S. Ulrich Not Threatened
Fragilaria utermoehlii Hust. Data Deficient
Fragilaria vaucheriae (Kütz.) J.B. Petersen Not Threatened
Fragilaria zeilleri Hérib. var. zeilleri Data Deficient
Fragilaria zeilleri var. africana Gasse Data Deficient
Fragilaria zeilleri var. elliptica Gasse Data Deficient
Fragilariforma bicapitata (A. Mayer) D.M. Williams & Round Threat of Unknown Extent
Fragilariforma constricta (Ehrenb.) D.M. Williams & Round Threatened
Fragilariforma nitzschioides (Grunow) Lange-Bert. Threatened
Fragilariforma virescens (Ralfs) D.M. Williams & Round Not Threatened
Frustulia amosseana Lange-Bert. Threat of Unknown Extent
Frustulia amphipleuroides (Grunow) Cleve-Euler Not Threatened
Frustulia crassinervia (Bréb.) Lange-Bert. & Krammer Near Threatened
Frustulia creuzburgensis (Krasske) Hust. Not Threatened
Frustulia erifuga Lange-Bert. & Krammer Threatened
Frustulia krammeri Lange-Bert. & Metzeltin Threatened with Extinction
Frustulia marginata Amossé Threat of Unknown Extent
Frustulia pangaeopsis Lange-Bert. Threat of Unknown Extent
Frustulia quadrisinuata Lange-Bert. Threat of Unknown Extent
Frustulia saxonica Rabenh. Near Threatened
Frustulia spicula Amossé Extremely Rare
Frustulia vulgaris (Thwaites) De Toni Not Threatened
Frustulia weinholdii Hust. Extremely Rare
G
Geissleria acceptata (Hust.) Lange-Bert. & Metzeltin Not Threatened
Geissleria cummerowi (Kalbe) Lange-Bert. Not Threatened
Geissleria declivis (Hust.) Lange-Bert. & Metzeltin Threatened with Extinction
Geissleria decussis (Hust.) Lange-Bert. & Metzeltin Not Threatened
Geissleria dolomitica (W. Bock) Lange-Bert. & Metzeltin Highly Threatened
Geissleria ignota (Krasske) Lange-Bert. & Metzeltin Near Threatened
Geissleria paludosa (Hust.) Lange-Bert. & Metzeltin Threatened
Geissleria schoenfeldii (Hust.) Lange-Bert. & Metzeltin Not Threatened
Geissleria similis (Krasske) Lange-Bert. & Metzeltin Near Threatened
Geissleria tectissima (Lange-Bert.) Lange-Bert. Threat of Unknown Extent
Geissleria thingvallae (Østrup) Metzeltin & Lange-Bert. Threatened with Extinction
Genkalia digituloides (Lange-Bert.) Lange-B. & Kulikovskiy Threat of Unknown Extent
Genkalia digitulus (Hust.) Lange-Bert. & Kulikovskiy Threatened
Germainiella enigmatica (H. Germ.) Lange-Bert. & Metzeltin Data Deficient
Gliwiczia calcar (Cleve) Kulikovskiy, Lange-Bert. & Witkowski Highly Threatened
Gomphocymbellopsis ancyli (Cleve) Krammer Threat of Unknown Extent
Gomphoneis minuta (J.L. Stone) Kociolek & Stoermer Data Deficient
Gomphoneis transsilvanica (Pant.) Krammer Data Deficient
Gomphonema acidoclinatum Lange-Bert. & E. Reichardt Data Deficient
Gomphonema acuminatum Ehrenb. var. acuminatum Not Threatened
Gomphonema acuminatum var. pusillum Grunow Threat of Unknown Extent
Gomphonema acutiusculum (O. Müll.) Cleve-Euler Extremely Rare
Gomphonema affine Kütz. Not established
Gomphonema amoenum Lange-Bert. Threatened
Gomphonema angustatum (Kütz.) Rabenh. Not Threatened
Gomphonema angusticephalum E. Reichardt & Lange-Bert. Extremely Rare
Gomphonema angustius E. Reichardt Threat of Unknown Extent
Gomphonema angustivalva E. Reichardt Data Deficient
Gomphonema angustum C. Agardh Threat of Unknown Extent
Gomphonema anjae Lange-Bert. & E. Reichardt Data Deficient
Gomphonema aquaemineralis Lange-Bert. & E. Reichardt Data Deficient
Gomphonema augur Ehrenb. Not Threatened
Gomphonema auritum A. Braun Threatened
Gomphonema bavaricum E. Reichardt & Lange-Bert. Threat of Unknown Extent
Gomphonema bipunctatum Krasske Highly Threatened
Gomphonema bozenae Lange-Bert. & E. Reichardt Threat of Unknown Extent
Gomphonema brebissonii Kütz. Not Threatened
Gomphonema calcifugum Lange-Bert. & E. Reichardt Near Threatened
Gomphonema campodunense E. Reichardt Data Deficient
Gomphonema capitatum Ehrenb. Not Threatened
Gomphonema capitoccultum E. Reichardt Highly Threatened
Gomphonema clavatulum E. Reichardt Not Threatened
Gomphonema coronatum Ehrenb. Threatened
Gomphonema cuneolus E. Reichardt Threat of Unknown Extent
Gomphonema cymbelliclinum E. Reichardt & Lange-Bert. Not Threatened
Gomphonema dichotomum Kütz. Near Threatened
Gomphonema disgracile E. Reichardt Threat of Unknown Extent
Gomphonema drutelingense E. Reichardt Data Deficient
Gomphonema elegantissimum E. Reichardt & Lange-Bert. Not Threatened
Gomphonema exiguum Kütz. var. exiguum Not Threatened
Gomphonema exiguum var. platypus (Østrup) Lange-Bert. Data Deficient
Gomphonema exilissimum (Grunow) Lange-Bert. & E. Reichardt Near Threatened
Gomphonema extentum E. Reichardt & Lange-Bert. Threat of Unknown Extent
Gomphonema gautieri (Van Heurck) Lange-Bert. & Metzeltin Extremely Rare
Gomphonema geisslerae E. Reichardt Threat of Unknown Extent
Gomphonema gracile Ehrenb. Data Deficient
Gomphonema graciledictum E. Reichardt Not Threatened
Gomphonema gutturatum E. Reichardt var. gutturatum Extremely Rare
Gomphonema gutturatum var. simplex E. Reichardt Extremely Rare
Gomphonema hebridense W. Greg. Near Threatened
Gomphonema helveticum Brun Highly Threatened
Gomphonema innocens E. Reichardt Not Threatened
Gomphonema insigne W. Greg. Near Threatened
Gomphonema insigniforme E. Reichardt & Lange-Bert. Near Threatened
Gomphonema interpositum E. Reichardt Threat of Unknown Extent
Gomphonema italicum Kütz. Not Threatened
Gomphonema jergackianum E. Reichardt Highly Threatened
Gomphonema lacunicola R.M. Patrick & Freese Data Deficient
Gomphonema lacus-vulcani E. Reichardt & Lange-Bert. Threat of Unknown Extent
Gomphonema lagerheimii A. Cleve Highly Threatened
Gomphonema lange-bertalotii E. Reichardt Extremely Rare
Gomphonema lapponicum (A. Cleve) Cleve-Euler Highly Threatened
Gomphonema lateripunctatum E. Reichardt & Lange-Bert. Near Threatened
Gomphonema liebscheri E. Reichardt Data Deficient
Gomphonema lippertii E. Reichardt & Lange-Bert. Threat of Unknown Extent
Gomphonema longiceps Ehrenb. Data Deficient
Gomphonema longilineare E. Reichardt Threat of Unknown Extent
Gomphonema micropumilum E. Reichardt Data Deficient
Gomphonema micropus Kütz. Not Threatened
Gomphonema minusculum Krasske Not Threatened
Gomphonema minutiforme Lange-Bert. & E. Reichardt Threatened
Gomphonema minutum (C. Agardh) C. Agardh f. minutum Not Threatened
Gomphonema minutum f. curtum (Hust.) Lange-Bert. & E. Reichardt Data Deficient
Gomphonema minutum f. lemanense Lange-Bert. & E. Reichardt Data Deficient
Gomphonema montanum Schum. Threat of Unknown Extent
Gomphonema obesoccultum E. Reichardt Extremely Rare
Gomphonema obscurum Krasske Not Threatened
Gomphonema occultum E. Reichardt & Lange-Bert. Threatened
Gomphonema olivaceoides Hust. Not Threatened
Gomphonema olivaceolacuum (Lange-Bert. & E. Reichardt) Lange-Bert. & E. Reichardt Not Threatened
Gomphonema olivaceum (Hornem.) Bréb. var. olivaceum Not Threatened
Gomphonema olivaceum var. balticum (Cleve) Grunow Near Threatened
Gomphonema olivaceum var. calcareum (Cleve) Cleve Near Threatened
Gomphonema olivaceum var. salinum Grunow Data Deficient
Gomphonema olivaceum var. staurophorum Pant. Data Deficient
Gomphonema pala E. Reichardt Threat of Unknown Extent
Gomphonema paludosum E. Reichardt Highly Threatened
Gomphonema parallelistriatum Lange-Bert. & E. Reichardt Extremely Rare
Gomphonema parvulius (Lange-Bert. & E. Reichardt) Lange-Bert. & E. Reichardt Threatened
Gomphonema parvulum Kütz. f. parvulum Not Threatened
Gomphonema parvulum var. lagenula (Kütz.) Freng. Extremely Rare
Gomphonema pratense Lange-Bert. & E. Reichardt Threat of Unknown Extent
Gomphonema procerum E. Reichardt & Lange-Bert. Threatened
Gomphonema productum (Grunow) Lange-Bert. & E. Reichardt Threat of Unknown Extent
Gomphonema pseudoaugur Lange-Bert. Not Threatened
Gomphonema pseudobohemicum Lange-Bert. & E. Reichardt Threatened
Gomphonema pseudotenellum Lange-Bert. Threat of Unknown Extent
Gomphonema pumilum (Grunow) E. Reichardt & Lange-Bert. var. pumilum Not Threatened
Gomphonema pumilum var. rigidum E. Reichardt & Lange-Bert. Not Threatened
Gomphonema rhombicum Mart. Schmidt Threat of Unknown Extent
Gomphonema sagitta Schum. Extremely Rare
Gomphonema salinarum (Pant.) Cleve Data Deficient
Gomphonema saprophilum (Lange-Bert. & E. Reichardt) N. Abarca et al. Not Threatened
Gomphonema sarcophagus W. Greg. Near Threatened
Gomphonema sphenovertex Lange-Bert. & E. Reichardt Threat of Unknown Extent
Gomphonema stagnorum E. Reichardt Data Deficient
Gomphonema stauroneiforme Grunow Highly Threatened
Gomphonema subclavatum (Grunow) Grunow Not Threatened
Gomphonema subtile Ehrenb. Extremely Rare
Gomphonema supertergestinum E. Reichardt Threat of Unknown Extent
Gomphonema tenoccultum E. Reichardt Threat of Unknown Extent
Gomphonema tenue Fricke Highly Threatened
Gomphonema tergestinum Fricke Not Threatened
Gomphonema truncatum Ehrenb. Not Threatened
Gomphonema utae Lange-Bert. & E. Reichardt Not Threatened
Gomphonema varioreduncum Jüttner et al. Data Deficient
Gomphonema variostigmatum E. Reichardt Data Deficient
Gomphonema variscohercynicum Lange-Bert. & E. Reichardt Threat of Unknown Extent
Gomphonema ventricosum W. Greg. Highly Threatened
Gomphonema vibrio Ehrenb. Threatened
Gomphonema zellense E. Reichardt Threat of Unknown Extent
Gomphosphenia fontinalis Lange-Bert., Ector & Werum Data Deficient
Gomphosphenia holmquistii Foged Data Deficient
Gomphosphenia lingulatiformis (Lange-Bert. & E. Reichardt) Lange-Bert. Not Threatened
Gomphosphenia oahuensis (Hust.) Lange-Bert. Extremely Rare
Gomphosphenia tackei (Hust.) Lange-Bert. Highly Threatened
Gyrosigma acuminatum (Kütz.) Rabenh. var. acuminatum Not Threatened
Gyrosigma acuminatum var. brebissonii (Grunow) Cleve Data Deficient
Gyrosigma attenuatum (Kütz.) Rabenh. Not Threatened
Gyrosigma balticum (Ehrenb.) Rabenh. Not Threatened
Gyrosigma fasciola (Ehrenb.) J.W. Griff. & Henfr. Not Threatened
Gyrosigma kuetzingii (Grunow) Cleve Data Deficient
Gyrosigma macrum (W. Smith) J.W. Griff. & Henfr. Not Threatened
Gyrosigma obscurum (W. Smith) J. W. Griff. & Henfr. Not Threatened
Gyrosigma obtusatum (Sull. & Wormley) C.S. Boyer Not Threatened
Gyrosigma parkeri (M.B. Harrison) Elmore Extremely Rare
Gyrosigma peisonis (Grunow) Hust. Extremely Rare
Gyrosigma sciotoense (Sull.) Cleve Not Threatened
Gyrosigma strigilis W. Smith Not Threatened
H
Halamphora acutiuscula (Kütz.) Levkov Not Threatened
Halamphora borealis (Kütz.) Levkov Data Deficient
Halamphora coffeaeformis (C. Agardh) Levkov Not Threatened
Halamphora dusenii (Brun) Levkov Data Deficient
Halamphora hassiaca (Krammer & S. Strecker) Lange-Bert. Not Threatened
Halamphora holsatica (Hust.) Levkov Not Threatened
Halamphora montana (Krasske) Levkov Not Threatened
Halamphora normanii (Rabenh.) Levkov var. normanii Near Threatened
Halamphora normanii var. undulata (Krasske) Levkov Data Deficient
Halamphora obscura (Krasske) Levkov Data Deficient
Halamphora oligotraphenta (Lange-Bert.) Levkov Highly Threatened
Halamphora saxonica R. Voigt & Levkov Data Deficient
Halamphora streckerae (Krammer) Lange-Bert. Not Threatened
Halamphora subcapitata (Kisselev) Levkov Data Deficient
Halamphora subholsatica (Krammer) Levkov Not Threatened
Halamphora thumensis (A. Mayer) Levkov Highly Threatened
Halamphora veneta (Kütz.) Levkov Not Threatened
Hannaea arcus (Ehrenb.) Cleve Near Threatened
Hantzschia abundans Lange-Bert. Not Threatened
Hantzschia alkaliphila Lange-Bert. Extremely Rare
Hantzschia amphioxys (Ehrenb.) Grunow Not Threatened
Hantzschia baltica Simonsen Not Threatened
Hantzschia barckhausenii Lange-Bert. & Metzeltin Threat of Unknown Extent
Hantzschia calcifuga E. Reichardt & Lange-Bert. Data Deficient
Hantzschia elongata (Hantzsch) Grunow Threat of Unknown Extent
Hantzschia graciosa Lange-Bert. Extremely Rare
Hantzschia hyalina (Donkin) Grunow Data Deficient
Hantzschia hyperborea (Grunow) Lange-Bert. Extremely Rare
Hantzschia marina (Donkin) Grunow Not Threatened
Hantzschia petitiana (Grunow) Grunow Data Deficient
Hantzschia spectabilis (Ehrenb.) Hust. Not Threatened
Hantzschia subrupestris Lange-Bert. Not Threatened
Hantzschia virgata (Roper) Grunow var. virgata Not Threatened
Hantzschia virgata var. capitellata Hust. Extremely Rare
Hantzschia virgata var. gracilis Hust. Extremely Rare
Hantzschia virgata var. intermedia (Grunow) Round Data Deficient
Hantzschia vivacior Lange-Bert. Data Deficient
Hantzschia vivax (W. Smith) Perag. var. vivax Not Threatened
Hantzschia weyprechtii Grunow Data Deficient
Haslea crucigera (W. Smith) Simonsen Not Threatened
Haslea spicula (Hickie) Lange-Bert. Not Threatened
Hippodonta arkonensis Lange-Bert. et al. Extremely Rare
Hippodonta capitata (Ehrenb.) Lange-Bert. et al. Not Threatened
Hippodonta costulata (Grunow) Lange-Bert. et al. Not Threatened
Hippodonta costulatiformis Lange-Bert. et al. Threatened with Extinction
Hippodonta coxiae Lange-Bert. Threat of Unknown Extent
Hippodonta hungarica (Grunow) Lange-Bert. et al. Not Threatened
Hippodonta lesmonensis (Hust.) Lange-Bert. et al. Not Threatened
Hippodonta linearis (Østrup) Lange-Bert. et al. Not Threatened
Hippodonta lueneburgensis (Grunow) Lange-Bert. et al. Extremely Rare
Hippodonta neglecta Lange-Bert. et al. Extremely Rare
Hippodonta pumila Lange-Bert. et al. Not Threatened
Hippodonta subcostulata (Hust.) Lange-Bert. et al. Not Threatened
Humidophila aerophila (Krasske) R.L. Lowe et al. Extremely Rare
Humidophila brekkaensis (J.B. Petersen) R.L. Lowe et al. Not Threatened
Humidophila brekkaensoides (W. Bock) R.L. Lowe et al. Extremely Rare
Humidophila contenta (Grunow) R.L. Lowe et al. Data Deficient
Humidophila dissimilis (Gerd Moser et al.) R.L. Lowe et al. Extremely Rare
Humidophila irata (Krasske) R.L. Lowe et al. Extremely Rare
Humidophila lacunosa (Lange-Bert.) R.L. Lowe et al. Data Deficient
Humidophila laevissima (Cleve) R.L. Lowe et al. Data Deficient
Humidophila paracontenta (Lange-Bert. & Werum) R.L. Lowe et al. Data Deficient
Humidophila perpusilla (Grunow) R.L. Lowe et al. Not Threatened
Humidophila schmassmannii (Hust.) K.Buczkó & A.Wojtal Threat of Unknown Extent
Humidophila simplex (E. Reichardt) R.L. Lowe et al. Not Threatened
Humidophila virginiana (Lange-Bert.) R.L. Lowe et al. Extremely Rare
Hygropetra balfouriana (Grunow) Krammer & Lange-Bert. Threat of Unknown Extent
K
Karayevia amoena (Hust.) Bukht. Data Deficient
Karayevia bottnica (Cleve) Lange-Bert. Data Deficient
Karayevia carissima (Lange-Bert.) Bukht. Highly Threatened
Karayevia clevei (Grunow) Bukht. var. clevei Not Threatened
Karayevia clevei var. rostellata (Hust.) Bukht. Data Deficient
Karayevia kolbei (Hust.) Bukht. Not Threatened
Karayevia laterostrata (Hust.) Bukht. Threatened
Karayevia ploenensis (Hust.) Bukht. Not Threatened
Karayevia submarina (Hust.) Bukht. Extremely Rare
Karayevia suchlandtii (Hust.) Bukht. Extremely Rare
Kobayasiella jaagii (F. Meister) Lange-Bert. Highly Threatened
Kobayasiella madumensis (E.G. Jørg.) Lange-Bert. Threatened with Extinction
Kobayasiella micropunctata (H. Germ.) Lange-Bert. Data Deficient
Kobayasiella okadae (Skvortsov) Lange-Bert. Threatened with Extinction
Kobayasiella parasubtilissima (Kobayasi & Nagumo) Lange-Bert. Near Threatened
Kobayasiella pseudostauron Lange-Bert. Threat of Unknown Extent
Kobayasiella subtilissima (Cleve) Lange-Bert. Highly Threatened
Krasskella kriegerana (Krasske) R. Ross & P.A. Sims Highly Threatened
L
Lacustriella gibbosa (Brun) Lange-Bert. & Kulkikovskiy Data Deficient
Lacustriella lacustris (W. Greg.) Lange-Bert. & Kulikovskiy Not Threatened
Lemnicola hungarica (Grunow) Round & Basson Not Threatened
Luticola acidoclinata Lange-Bert. Threat of Unknown Extent
Luticola binodeformis Levkov et al. Extremely Rare
Luticola binodis (Hust.) Edlund Extremely Rare
Luticola charlatii (Perag.) Metzeltin & Lange-Bert. Not Threatened
Luticola cohnii (Hilse) D.G. Mann Near Threatened
Luticola dismutica (Hust.) D.G. Mann Extremely Rare
Luticola frequentissima Levkov et al. Data Deficient
Luticola goeppertiana (Bleisch) Rarick et al. Not Threatened
Luticola heufleriana (Grunow) D.G. Mann Near Threatened
Luticola imbricata (W. Bock) Levkov et al. Data Deficient
Luticola mutica (Kütz.) D.G. Mann Not Threatened
Luticola nivalis (Ehrenb.) D.G. Mann Not Threatened
Luticola nivaloides (W. Bock) Denys & W.H. De Smet Data Deficient
Luticola paramutica (W. Bock) D.G. Mann Extremely Rare
Luticola pseudokotschyi (Lange-Bert.) Metzeltin & Lange-Bert. Extremely Rare
Luticola pseudonivalis (W. Bock) Levkov et al. Extremely Rare
Luticola quinquenodis (Grunow) Levkov et al. Data Deficient
Luticola saprophila Levkov et al. Data Deficient
Luticola saxophila (W. Bock) D.G. Mann Extremely Rare
Luticola undulata (Hilse) D.G. Mann Data Deficient
Luticola ventriconfusa Lange-Bert. Data Deficient
Luticola ventricosa (Kütz.) D.G. Mann Not Threatened
M
Mastogloia amphicephala Grunow Threat of Unknown Extent
Mastogloia baltica Grunow Not Threatened
Mastogloia braunii Grunow Not Threatened
Mastogloia dansei (Thwaites) W. Smith Not Threatened
Mastogloia elliptica C. Agardh Not Threatened
Mastogloia elliptica var. dansei sensu Krammer & Lange-Bert. non (Thwaites) Grunow Data Deficient
Mastogloia grevillei W. Smith Threat of Unknown Extent
Mastogloia lacustris (Grunow) Van Heurck Threat of Unknown Extent
Mastogloia pumila (Grunow) Cleve Not Threatened
Mastogloia smithii Thwaites Not Threatened
Mayamaea agrestis (Hust.) Lange-Bert. Not Threatened
Mayamaea asellus (Weinhold) Lange-Bert. Extremely Rare
Mayamaea atomus (Kütz.) Lange-Bert. var. atomus Not Threatened
Mayamaea atomus var. alcimonica (E. Reichardt) E. Reichardt Data Deficient
Mayamaea destricta (Hust.) Lange-Bert. Extremely Rare
Mayamaea excelsa (Krasske) Lange-Bert. Not Threatened
Mayamaea fossalis (Krasske) Lange-Bert. var. fossalis Not Threatened
Mayamaea fossalis var. obsidialis (Hust.) Lange-Bert. Extremely Rare
Mayamaea fossaloides (Hust.) Lange-Bert. Data Deficient
Mayamaea ingenua (Hust.) Lange-Bert. & G. Hofm. Extremely Rare
Mayamaea lacunolaciniata (Lange-Bert. & Bonik) Lange-Bert. Data Deficient
Mayamaea nolensoides (W. Bock) Lange-Bert. Extremely Rare
Mayamaea permitis (Hust.) K. Bruder & L.K. Medlin Not Threatened
Mayamaea recondita (Hust.) Lange-Bert. Extremely Rare
Mayamaea terrestris N. Abarca & R. Jahn Data Deficient
Melosira dickiei (Thwaites) Kütz. Extremely Rare
Melosira lineata (Dillwyn) C. Agardh Not Threatened
Melosira moniliformis (O.F. Müll.) C. Agardh var. moniliformis Not Threatened
Melosira moniliformis var. octagona (Grunow) Hust. Not Threatened
Melosira nummuloides (Dillwyn) C. Agardh Not Threatened
Melosira varians C. Agardh Not Threatened
Meridion circulare (Grev.) C. Agardh var. circulare Not Threatened
Meridion circulare var. constrictum (Ralfs) Van Heurck Not Threatened
Microcostatus egregius (Hust.) Lange-Bert. Extremely Rare
Microcostatus krasskei (Hust.) J.R. Johans. & Sray Near Threatened
Microcostatus kuelbsii (Lange-Bert.) Lange-Bert. Extremely Rare
Microcostatus maceria (Schim.) Lange-Bert. Threatened
Microcostatus naumannii (Hust.) Lange-Bert. Extremely Rare
Miosira arentii (Kolbe) Krammer Data Deficient
Muelleria gibbula (Cleve) Spauld. & Stoermer Threat of Unknown Extent
Muelleria relicta (Mc Call) E. Reichardt Extremely Rare
N
Navicula abscondita Hust. Data Deficient
Navicula absoluta Hust. Threatened
Navicula adversa Krasske Threatened
Navicula aleksandrae Lange-Bert. et al. Data Deficient
Navicula ammophila Grunow Not Threatened
Navicula amphiceropsis Lange-Bert. & U. Rumrich Not Threatened
Navicula amphiceros Kütz. Data Deficient
Navicula angusta Grunow Highly Threatened
Navicula antonii Lange-Bert. Not Threatened
Navicula aquaedurae Lange-Bert. Not Threatened
Navicula arenaria Donkin var. arenaria Not Threatened
Navicula arenaria var. rostellata Lange-Bert. Not Threatened
Navicula arvensis Hust. Data Deficient
Navicula associata Lange-Bert. Not Threatened
Navicula austrocollegarum Lange-Bert. & R. Voigt Extremely Rare
Navicula bacilloides Hust. Threat of Unknown Extent
Navicula bergenensis M.H. Hohn Extremely Rare
Navicula bottnica Grunow Not Threatened
Navicula bourellyivera Lange-Bert. et al. Data Deficient
Navicula bozenae Lange-Bert. et al. Data Deficient
Navicula brasiliana (Cleve) Cleve Extremely Rare
Navicula breitenbuchii Lange-Bert. Extremely Rare
Navicula brockmannii Hust. Highly Threatened
Navicula broetzii Lange-Bert. & E. Reichardt Threat of Unknown Extent
Navicula cancellata Donkin Not Threatened
Navicula capitatoradiata H. Germ. Not Threatened
Navicula cari Ehrenb. Not Threatened
Navicula cariocincta Lange-Bert. Threat of Unknown Extent
Navicula catalanogermanica Lange-Bert. & G. Hofm. Extremely Rare
Navicula cataracta-rheni Lange-Bert. Threat of Unknown Extent
Navicula caterva M.H. Hohn & Hellerman Not Threatened
Navicula cincta (Ehrenb.) Ralfs Not Threatened
Navicula concentrica J.R. Carter Highly Threatened
Navicula cryptocephala Kütz. Not Threatened
Navicula cryptofallax Lange-Bert. & G. Hofm. Not Threatened
Navicula cryptotenella Lange-Bert. Not Threatened
Navicula cryptotenelloides Lange-Bert. Not Threatened
Navicula dealpina Lange-Bert. Highly Threatened
Navicula densilineolata (Lange-Bert.) Lange-Bert. Highly Threatened
Navicula detenta Hust. Threatened with Extinction
Navicula diabolica Geissler & Gerloff Threatened with Extinction
Navicula difficillima Hust. Threat of Unknown Extent
Navicula difficillimoides Hust. Extremely Rare
Navicula digitoconvergens Lange-Bert. Not Threatened
Navicula digitoradiata (W. Greg.) Ralfs Not Threatened
Navicula digna Hust. Extremely Rare
Navicula domiciliensis E. Reichardt Data Deficient
Navicula duerrenbergiana Hust. Data Deficient
Navicula eidrigiana J.R. Carter Extremely Rare
Navicula erifuga Lange-Bert. Not Threatened
Navicula escambia (R.M. Patrick) Metzeltin & Lange-Bert. Not Threatened
Navicula exilis Kütz. Threatened
Navicula expecta VanLand. Extremely Rare
Navicula flanatica Grunow Not Threatened
Navicula fluens Hust. Extremely Rare
Navicula germainii J.H. Wallace Not Threatened
Navicula germanopolonica Witkowski & Lange-Bert. Not Threatened
Navicula glomus J.R. Carter & Bailey-Watts Extremely Rare
Navicula gottlandica Grunow Highly Threatened
Navicula graciloides A. Mayer Data Deficient
Navicula gregaria Donkin Not Threatened
Navicula hanseatica Lange-Bert. & Stachura subsp. hanseatica Not Threatened
Navicula hasta Pantocsek Not established
Navicula heimansioides Lange-Bert. Highly Threatened
Navicula hintzii Lange-Bert. Extremely Rare
Navicula hofmanniae Lange-Bert. Not Threatened
Navicula integra (W. Smith) Ralfs Not Threatened
Navicula irmengardis Lange-Bert. Highly Threatened
Navicula iserentantii Lange-Bert. & Witkowski Data Deficient
Navicula jakovljevicii Hust. Not Threatened
Navicula jentzschii Grunow Threat of Unknown Extent
Navicula kefvingensis (Ehrenb.) Kütz. Not Threatened
Navicula koenigii C. Brockmann Data Deficient
Navicula kotschyi Grunow var. kotschyi Not Threatened
Navicula kotschyi var. rostellata (Hust.) Lange-Bert. Data Deficient
Navicula krammerae Lange-Bert. Data Deficient
Navicula lacuum Lange-Bert. et al. Not Threatened
Navicula lanceolata (C. Agardh) Ehrenb. Not Threatened
Navicula lancettula Schum. Data Deficient
Navicula laterostrata Hust. Not Threatened
Navicula laticeps Hust. Highly Threatened
Navicula leistikowii Lange-Bert. Threat of Unknown Extent
Navicula leptostriata E.G. Jørg. Highly Threatened
Navicula libonensis Schoeman Not Threatened
Navicula longicephala Hust. Extremely Rare
Navicula lucidula Grunow Data Deficient
Navicula lundii E. Reichardt Not Threatened
Navicula margalithii Lange-Bert. Extremely Rare
Navicula mediocostata E. Reichardt Highly Threatened
Navicula menisculus Schum. Not Threatened
Navicula meniscus Schum. Not Threatened
Navicula meulemansii A. Mert. et al. Not Threatened
Navicula microcari Lange-Bert. Data Deficient
Navicula microdigitoradiata Lange-Bert. Extremely Rare
Navicula modica Hust. Data Deficient
Navicula moenofranconica Lange-Bert. Threatened
Navicula mollis (W. Smith) Cleve Not Threatened
Navicula moskalii Metzeltin et al. Not Threatened
Navicula muraliformis Hust. Extremely Rare
Navicula mutica var. gibbosa Mc Call Data Deficient
Navicula mutica var. gibbula Hust. Data Deficient
Navicula mutica var. subundulata Grunow Data Deficient
Navicula muticopsis Van Heurck Not established
Navicula namibica U. Rumrich & Lange-Bert. Data Deficient
Navicula nolens Simonsen Data Deficient
Navicula normaloides Cholnoky Not Threatened
Navicula notha J.H. Wallace Highly Threatened
Navicula novaesiberica Lange-Bert. Not Threatened
Navicula oblonga Kütz. Threat of Unknown Extent
Navicula obsoleta Hust. Extremely Rare
Navicula oligotraphenta Lange-Bert. & G. Hofm. Threat of Unknown Extent
Navicula oppugnata Hust. Not Threatened
Navicula ordinaria Hust. Extremely Rare
Navicula paracari Lange-Bert., Dobosz & Bak Data Deficient
Navicula parsura Hust. Extremely Rare
Navicula paul-schulzii Witkowski & Lange-Bert. Not Threatened
Navicula pavillardii Hust. Not Threatened
Navicula pellicola C. Brockmann Data Deficient
Navicula peregrina auct. non (Ehrenb.) Kütz. Not Threatened
Navicula perminuta Grunow Not Threatened
Navicula phyllepta Kütz. Not Threatened
Navicula phylleptosoma Lange-Bert. Data Deficient
Navicula pierre-comperei Lange-Bert. & G. Hofm. Extremely Rare
Navicula platystoma Ehrenb. Threat of Unknown Extent
Navicula praeterita Hust. Highly Threatened
Navicula pseudoarvensis Hust. Extremely Rare
Navicula pseudolanceolata Lange-Bert. Highly Threatened
Navicula pseudoventralis Hust. Not Threatened
Navicula radiosa Kütz. Not Threatened
Navicula recens (Lange-Bert.) Lange-Bert. Not Threatened
Navicula reichardtiana Lange-Bert. Not Threatened
Navicula reinhardtii Grunow Not Threatened
Navicula rhynchocephala Kütz. Not Threatened
Navicula rhynchotella Lange-Bert. Not Threatened
Navicula ricardae Lange-Bert. Extremely Rare
Navicula rostellata Kütz. Not Threatened
Navicula salinarum Grunow var. salinarum Not Threatened
Navicula salinarum var. minima Kolbe Not Threatened
Navicula salinarum var. rostrata (Hust.) Lange-Bert. Data Deficient
Navicula salinicola Hust. Not Threatened
Navicula schadei Krasske Highly Threatened
Navicula scutum (Schum.) Van Heurck Data Deficient
Navicula seibigiana Lange-Bert. Not Threatened
Navicula semihyalina W. Bock Extremely Rare
Navicula sieminskiae Lange-Bert. & Witkowski Data Deficient
Navicula simulata Manguin Not Threatened
Navicula slesvicensis Grunow Not Threatened
Navicula splendicula VanLand. Threat of Unknown Extent
Navicula stankovicii Hust. Threat of Unknown Extent
Navicula streckerae Lange-Bert. & Witkowski Not Threatened
Navicula striolata (Grunow) Lange-Bert. Threat of Unknown Extent
Navicula subalpina E. Reichardt Threatened
Navicula subconcentrica Lange-Bert. Extremely Rare
Navicula subocculta Hust. Extremely Rare
Navicula subrhynchocephala Hust. Extremely Rare
Navicula supergregaria Lange-Bert. & U. Rumrich Not Threatened
Navicula tenelloides Hust. Not Threatened
Navicula tridentula Krasske Threat of Unknown Extent
Navicula tripunctata (O.F. Müll.) Bory Not Threatened
Navicula trivialis Lange-Bert. Not Threatened
Navicula trophicatrix Lange-Bert. Not Threatened
Navicula umida W. Bock Data Deficient
Navicula upsaliensis (Grunow) Perag. Not Threatened
Navicula vandamii Schoeman & R.E.M. Archibald var. vandamii Not Threatened
Navicula vandamii var. mertensiae Lange-Bert. Not Threatened
Navicula vaneei Lange-Bert. Not Threatened
Navicula venerabilis M.H. Hohn & Hellerman Highly Threatened
Navicula veneta Kütz. Not Threatened
Navicula vilaplanii (Lange-Bert. & Sabater) Lange-Bert. & Sabater Not Threatened
Navicula viminoides subsp. cosmomarina Lange-Bert. et al. Data Deficient
Navicula viridula (Kütz.) Ehrenb. Not Threatened
Navicula viridulacalcis Lange-Bert. Threat of Unknown Extent
Navicula vulpina Kütz. Threatened
Navicula wendlingii Lange-Bert. et al. Data Deficient
Navicula wiesneri Lange-Bert. Not Threatened
Navicula wildii Lange-Bert. Highly Threatened
Navicula witkowskii Lange-Bert. et al. Not Threatened
Navicula wygaschii Lange-Bert. Threat of Unknown Extent
Naviculadicta bremensiformis Lange-Bert. Threat of Unknown Extent
Naviculadicta cosmopolitana Lange-Bert. Not Threatened
Naviculadicta geisslerae (R. Jahn) R. Jahn Data Deficient
Naviculadicta multiconfusa Lange-Bert. Extremely Rare
Naviculadicta obdurata (M.H. Hohn & Hellerman) Lange-Bert. & Metzeltin Data Deficient
Naviculadicta pauxilla E. Reichardt Data Deficient
Naviculadicta vaucheriae (J.B. Petersen) Lange-Bert. Data Deficient
Naviculadicta vitabunda (Hust.) Lange-Bert. Threat of Unknown Extent
Navicymbula pusilla (Grunow) Krammer Not Threatened
Navigiolum canoris (M.H. Hohn & Hellerman) Lange-Bert. Data Deficient
Navigiolum exiliforme (E. Reichardt) Lange-Bert. Extremely Rare
Navigiolum silesiacum Lange-Bert. & G. Hofm. Extremely Rare
Neidiomorpha binodiformis (Krammer) Cantonati et al. Threat of Unknown Extent
Neidiomorpha binodis (Ehrenb.) Cantonati et al. Near Threatened
Neidiopsis levanderi (Hust.) Lange-Bert. & Metzeltin var. levanderi Highly Threatened
Neidiopsis levanderi var. capitata (Krasske) Lange-Bert. Data Deficient
Neidium affine (Ehrenb.) Pfitzer Near Threatened
Neidium alpinum Hust. Highly Threatened
Neidium ampliatum (Ehrenb.) Krammer Near Threatened
Neidium bisulcatum (Lagerst.) Cleve var. bisulcatum Threatened
Neidium bisulcatum var. subampliatum Krammer Threatened
Neidium carteri Krammer Threatened
Neidium densestriatum (Østrup) Krammer Extremely Rare
Neidium dilatatum (Ehrenb.) Cleve Data Deficient
Neidium distincte-punctatum Hust. Extremely Rare
Neidium dubium (Ehrenb.) Cleve Not Threatened
Neidium elongatum (Hust.) Lange-Bert. et al. Extremely Rare
Neidium hercynicum A. Mayer Threat of Unknown Extent
Neidium iridis (Ehrenb.) Cleve agg. Highly Threatened
Neidium javanicum Hust. Extremely Rare
Neidium kozlowii Mereschk. var. kozlowii Threat of Unknown Extent
Neidium kozlowii var. ellipticum Mereschk. Extremely Rare
Neidium ladogense (Cleve) Foged Extremely Rare
Neidium longiceps (W. Greg.) R. Ross Threat of Unknown Extent
Neidium lucinense (Hust.) Metzeltin & Lange-Bert. Extremely Rare
Neidium minutissimum Krasske Extremely Rare
Neidium opulentum Hust. Threat of Unknown Extent
Neidium paraffine Lange-Bert. et al. Data Deficient
Neidium perforatum Schim. Extremely Rare
Neidium productum (W. Smith) Cleve var. productum Threat of Unknown Extent
Neidium productum var. constrictum Hust. Data Deficient
Neidium septentrionale Cleve-Euler Threat of Unknown Extent
Neidium vernale (Reichelt) Metzeltin & Lange-Bert. Data Deficient
Nitzschia acicularioides Hust. Data Deficient
Nitzschia acicularis (Kütz.) W. Smith var. acicularis Not Threatened
Nitzschia acicularis var. closterioides Grunow Data Deficient
Nitzschia acidoclinata Lange-Bert. Near Threatened
Nitzschia acula Hantzsch Not Threatened
Nitzschia acuminata (W. Smith) Grunow Not Threatened
Nitzschia adamata Hust. Not Threatened
Nitzschia aequorea Hust. Not Threatened
Nitzschia aerophila Hust. Not Threatened
Nitzschia aestuarii Hust. Data Deficient
Nitzschia agnewii Cholnoky Data Deficient
Nitzschia agnita Hust. Not Threatened
Nitzschia alicae Hlúbikova & Ector Data Deficient
Nitzschia alpina Hust. Threatened
Nitzschia alpinobacillum Lange-Bert. Highly Threatened
Nitzschia amphibia Grunow Not Threatened
Nitzschia amplectens Hust. Not Threatened
Nitzschia angustata (W. Smith) Grunow Not Threatened
Nitzschia angustatula Lange-Bert. Not Threatened
Nitzschia angustiforaminata Lange-Bert. Not Threatened
Nitzschia aniae Lange-Bert. Extremely Rare
Nitzschia archibaldii Lange-Bert. Not Threatened
Nitzschia arcuata W. Greg. ex Grev. Data Deficient
Nitzschia aremonica R.E.M. Archibald Data Deficient
Nitzschia aurariae Cholnoky Not Threatened
Nitzschia bacillariaeformis Hust. Data Deficient
Nitzschia bavarica Hust. Threatened
Nitzschia behrei Hust. Not Threatened
Nitzschia bergii Cleve-Euler Data Deficient
Nitzschia beyeri Lange-Bert. Data Deficient
Nitzschia bilobata Grunow Not Threatened
Nitzschia bremensis Hust. Near Threatened
Nitzschia brevissima Grunow Not Threatened
Nitzschia brunoi Lange-Bert. Not Threatened
Nitzschia bryophila (Hust.) Hust. Threat of Unknown Extent
Nitzschia bulnheimiana Rabenh. Not Threatened
Nitzschia calida Grunow Not Threatened
Nitzschia capitellata Hust. var. capitellata Not Threatened
Nitzschia circumsuta (Bailey) Grunow Not Threatened
Nitzschia clausii Hantzsch Not Threatened
Nitzschia closterium (Ehrenb.) W. Smith Not Threatened
Nitzschia coarctata Grunow agg. Not Threatened
Nitzschia communis Rabenh. Not Threatened
Nitzschia commutata Grunow Not Threatened
Nitzschia commutatoides Lange-Bert. Not Threatened
Nitzschia compressa (Bailey) C.S. Boyer var. compressa Not Threatened
Nitzschia compressa var. balatonis (Grunow) Lange-Bert. Extremely Rare
Nitzschia compressa var. elongata (Grunow) Lange-Bert. Extremely Rare
Nitzschia congolensis Hust. Data Deficient
Nitzschia constricta (W. Greg.) Grunow Not Threatened
Nitzschia dealpina Lange-Bert. & G. Hofm. Threatened
Nitzschia debilis Arn. Not Threatened
Nitzschia denticula Grunow Near Threatened
Nitzschia desertorum Hust. Not Threatened
Nitzschia dippelii Grunow Extremely Rare
Nitzschia disputata J.R. Carter Extremely Rare
Nitzschia dissipata (Kütz.) Grunow var. dissipata Not Threatened
Nitzschia dissipata var. media (Hantzsch) Grunow Near Threatened
Nitzschia diversa Hust. Highly Threatened
Nitzschia draveillensis M. Coste & Ricard Not Threatened
Nitzschia dubia W. Smith Not Threatened
Nitzschia dubiiformis Grunow Data Deficient
Nitzschia eglei Lange-Bert. Extremely Rare
Nitzschia elegantula Grunow Not Threatened
Nitzschia elliptica Hust. Data Deficient
Nitzschia epithemoides Grunow Not Threatened
Nitzschia eutinensis Lange-Bert. & Werum Extremely Rare
Nitzschia fasciculata Grunow Not Threatened
Nitzschia fibulafissa Lange-Bert. Highly Threatened
Nitzschia filiformis (W. Smith) Van Heurck var. filiformis Not Threatened
Nitzschia filiformis var. conferta (O. Richt.) Lange-Bert. Not Threatened
Nitzschia flexa Schum. Not Threatened
Nitzschia flexoides Geitler Data Deficient
Nitzschia fonticola Grunow Not Threatened
Nitzschia fossilis Grunow Not Threatened
Nitzschia frequens Hust. Not Threatened
Nitzschia frustulum (Kütz.) Grunow var. frustulum Not Threatened
Nitzschia frustulum var. inconspicua Grunow Not Threatened
Nitzschia frustulum var. subsalina Hust. Data Deficient
Nitzschia fruticosa Hust. Not Threatened
Nitzschia garrensis Hust. Threatened with Extinction
Nitzschia geitleri Hust. Extremely Rare
Nitzschia gessneri Hust. Highly Threatened
Nitzschia gisela Lange-Bert. Highly Threatened
Nitzschia graciliformis Lange-Bert. & Simonsen Not Threatened
Nitzschia gracilis Hantzsch Not Threatened
Nitzschia granulata Grunow Not Threatened
Nitzschia hadriatica Lange-Bert. Data Deficient
Nitzschia hantzschiana Rabenh. Threat of Unknown Extent
Nitzschia harderi Hust. Extremely Rare
Nitzschia heufleriana Grunow Not Threatened
Nitzschia homburgiensis Lange-Bert. Threat of Unknown Extent
Nitzschia hungarica Grunow Not Threatened
Nitzschia hybrida Grunow Not Threatened
Nitzschia impressa Hust. Data Deficient
Nitzschia improvisa Simonsen Data Deficient
Nitzschia incognita Krasske Data Deficient
Nitzschia incrustans Grunow Not Threatened
Nitzschia insignis W. Greg. Not Threatened
Nitzschia intermedia Hantzsch f. intermedia Not Threatened
Nitzschia intermedia f. actinastroides (Lemmerm.) Lange-Bert. Not Threatened
Nitzschia jucunda Hust. Highly Threatened
Nitzschia kittlii Grunow Extremely Rare
Nitzschia kuetzingioides Hust. Data Deficient
Nitzschia lacuum Lange-Bert. Threat of Unknown Extent
Nitzschia laevis Hust. Not Threatened
Nitzschia lanceola var. minutula Grunow Data Deficient
Nitzschia lanceolata W. Smith f. lanceolata Not Threatened
Nitzschia lanceolata f. minima Grunow Data Deficient
Nitzschia lanceolata var. minor Grunow Data Deficient
Nitzschia langebertalotii M. Coste & Ricard Not Threatened
Nitzschia latens Hust. Data Deficient
Nitzschia levidensis (W. Smith) Grunow var. levidensis Not Threatened
Nitzschia levidensis var. victoriae Grunow Not Threatened
Nitzschia liebetruthii Rabenh. agg. Not Threatened
Nitzschia linearis W. Smith Not Threatened
Nitzschia littoralis Grunow Not Threatened
Nitzschia littorea Grunow Not Threatened
Nitzschia lorenziana Grunow Not Threatened
Nitzschia macilenta W. Greg. ex Grev. Data Deficient
Nitzschia manca Hust. Data Deficient
Nitzschia marginulata Grunow Not Threatened
Nitzschia microcephala Grunow Not Threatened
Nitzschia modesta Hust. Not Threatened
Nitzschia monachorum Lange-Bert. Extremely Rare
Nitzschia nana Grunow Not Threatened
Nitzschia navicularis (Bréb.) Grunow Not Threatened
Nitzschia normannii Grunow Data Deficient
Nitzschia obtusa W. Smith Not Threatened
Nitzschia oligotraphenta (Lange-Bert.) Lange-Bert. Threat of Unknown Extent
Nitzschia ovalis Arn. Not Threatened
Nitzschia palea (Kütz.) W. Smith var. palea Not Threatened
Nitzschia palea var. debilis (Kütz.) Grunow Not Threatened
Nitzschia palea var. tenuirostris sensu Lange-Bert. non Grunow Not Threatened
Nitzschia paleacea Grunow Not Threatened
Nitzschia paleaeformis Hust. Threat of Unknown Extent
Nitzschia palustris Hust. Threat of Unknown Extent
Nitzschia panduriformis W. Greg. Data Deficient
Nitzschia pararostrata (Lange-Bert.) Lange-Bert. Not Threatened
Nitzschia peisonis Pant. Data Deficient
Nitzschia pellucida Grunow Data Deficient
Nitzschia perindistincta Cholnoky Not Threatened
Nitzschia perminuta (Grunow) Perag. Not Threatened
Nitzschia perspicua Cholnoky Data Deficient
Nitzschia plana W. Smith Not Threatened
Nitzschia prolongata Hust. var. prolongata Extremely Rare
Nitzschia prolongata var. hoehnkii (Hust.) Lange-Bert. Extremely Rare
Nitzschia pseudocommunis Hust. Data Deficient
Nitzschia pseudofonticola Hust. Threat of Unknown Extent
Nitzschia pumila Hust. Threat of Unknown Extent
Nitzschia pura Hust. Not Threatened
Nitzschia puriformis Hlúbiková & Ector Data Deficient
Nitzschia pusilla Grunow Not Threatened
Nitzschia radicula Hust. Threatened
Nitzschia recta Hantzsch Not Threatened
Nitzschia rectiformis Hust. Threat of Unknown Extent
Nitzschia rectirobusta Lange-Bert. Near Threatened
Nitzschia rectissima Hust. Data Deficient
Nitzschia regula Hust. Highly Threatened
Nitzschia reversa W. Smith Not Threatened
Nitzschia rhombicolancettula Lange-Bert. & Werum Data Deficient
Nitzschia rosenstockii Lange-Bert. Data Deficient
Nitzschia salinarum Grunow Not Threatened
Nitzschia scalaris (Ehrenb.) W. Smith Not Threatened
Nitzschia scalpelliformis Grunow Not Threatened
Nitzschia sigma (Kütz.) W. Smith Not Threatened
Nitzschia sigmaformis Hust. Not Threatened
Nitzschia sigmoidea (Nitzsch) W. Smith Not Threatened
Nitzschia sinuata (Thwaites) Grunow Data Deficient
Nitzschia sociabilis Hust. Not Threatened
Nitzschia solgensis Cleve-Euler Not Threatened
Nitzschia solita Hust. Not Threatened
Nitzschia soratensis E. Morales & M.L. Vis Not Threatened
Nitzschia subacicularis Hust. Not Threatened
Nitzschia subcohaerens var. scotica (Grunow) Van Heurck Data Deficient
Nitzschia subinvicta Hust. Data Deficient
Nitzschia sublinearis Hust. Not Threatened
Nitzschia subtilis Grunow Not Threatened
Nitzschia suchlandtii Hust. Data Deficient
Nitzschia supralitorea Lange-Bert. Not Threatened
Nitzschia tabellaria Grunow Data Deficient
Nitzschia tenuis W. Smith Not Threatened
Nitzschia terrestris (J.B. Petersen) Hust. Not Threatened
Nitzschia thermaloides Hust. Not Threatened
Nitzschia tropica Hust. Data Deficient
Nitzschia tryblionella Hantzsch Not Threatened
Nitzschia tubicola Grunow Not Threatened
Nitzschia umbonata (Ehrenb.) Lange-Bert. Not Threatened
Nitzschia valdecostata Lange-Bert. & Simonsen Extremely Rare
Nitzschia valdestriata Aleem & Hust. Not Threatened
Nitzschia vasta Hust. Extremely Rare
Nitzschia vermicularioides Lange-Bert. Data Deficient
Nitzschia vermicularis (Kütz.) Hantzsch f. vermicularis Not Threatened
Nitzschia vermicularis f. angustior Grunow Data Deficient
Nitzschia vexans (Grunow) Grunow Extremely Rare
Nitzschia vitrea G. Norman var. vitrea Not Threatened
Nitzschia vitrea var. salinarum Grunow Not Threatened
Nitzschia vixnegligenda Lange-Bert. & G. Hofm. Data Deficient
Nitzschia vixpalea Lange-Bert. & Werum Data Deficient
Nitzschia wuellerstorffii Lange-Bert. Not Threatened
Nupela gracillima (Hust.) Lange-Bert. Data Deficient
Nupela imperfecta (Schim.) Lange-Bert. Threat of Unknown Extent
Nupela impexiformis (Lange-Bert.) Lange-Bert. Extremely Rare
Nupela jahniae-reginae Lange-Bert. & Metzeltin Data Deficient
Nupela lapidosa (Krasske) Lange-Bert. Threat of Unknown Extent
Nupela rhetica (Wuthrich) Lange-Bert. Extremely Rare
Nupela silvahercynia (Lange-Bert.) Lange-Bert. Threatened
Nupela tenuicephala (Hust.) Lange-Bert. Threatened
Nupela vitiosa (Schim.) Lange-Bert. Threat of Unknown Extent
Nupela wellneri (Lange-Bert.) Lange-Bert. Data Deficient
O
Odontella rhombus (Ehrenb.) Kütz. Data Deficient
Oestrupia bicontracta (Østrup) Lange-Bert. & Krammer Near Threatened
Oestrupia zachariasii (Reichelt) Hust.