The Freshwater Diatoms of Ireland Genera F-U
FALLACIA Stickle & D. Mann in Round et al. 1990
F. helensis (Schulz) D. Mann in Round et al.
Navicula helensis Schulz
Navicula subhamulata var. undulata Hustedt
F. indifferens (Hustedt) D. Mann in Round et al.
Navicula indifferens Hustedt
F. pygmaea (Kützing) Stickle & D. Mann
Navicula pygmaea Kützing
F. subhamulata (Grunow in Van Heurck) D. Mann in Round et al.
Navicula subhamulata Grunow in Van Heurck
F. vitrea (Østrup) D. Mann
Navicula festiva Krasske
FISTULIFERA Lange-Bertalot 1997
F. saprophila (Lange-Bertalot & Bonik) Lange-Bertalot
Navicula saprophila Lange-Bertalot & Bonik
FRAGILARIA Lyngbye 1819
F. capucina Desmazières
F. capucina var. lanceolata Grunow in Van Heurck
F. capucina var. amphicephala (Kützing) Lange-Bertalot ex Bukhtiyarova
F. amphicephala (Kützing) Lange-Bertalot in Krammer & Lange-Bertalot
Synedra amphicephala Kützing
F. crotonensis Kitton
F. gracilis Østrup
F. capucina var. gracilis (Østrup) Hustedt
Synedra rumpens var. familiaris (Kützing) Grunow
F. heidenii Østrup
F. inflata (Heiden) Hustedt
F. nanana Lange-Bertalot in Krammer & Lange-Bertalot
Synedra nana Meister
F. quadrata (Hustedt) Lange-Bertalot & Metzeltin
F. constricta f. stricta Cleve
F. radians (Kützing) Williams & Round
Synedra radians Kützing
F. vaucheriae (Kützing) Petersen
Synedra vaucheriae (Kützing) Kützing
? Synedra vaucheriae var. capitellata Grunow in Van Heurck
F. intermedia Grunow in Van Heurck
F. capucina var. vaucheriae (Kützing) Lange-Bertalot
FRAGILARIFORMA Williams & Round 1988
F. bicapitata (Mayer) Williams & Round
Fragilaria bicapitata Mayer
F. constricta (Ehrenberg) Williams & Round
Fragilaria constricta Ehrenberg
F. virescens (Ralfs) Williams & Round
Fragilaria virescens Ralfs
F. virescens var. elliptica (Hustedt) Aboal in Aboal et al.
Fragilaria virescens var. elliptica Hustedt
F. virescens var. mesolepta (Rabenhorst) Andresen, Stoermer, & Kreis
Fragilaria capucina var. mesolepta (Rabenhorst) Rabenhorst
F. virescens var. subsalina (Grunow in Van Heurck) Bukhtiyarova
Fragilaria virescens var. subsalina Grunow in Van Heurck
FRUSTULIA Rabenhorst 1853
F. amosseana Lange-Bertalot in Rumrich et al.
F. vulgaris var. capitata Krasske
F. amphipleuroides (Grunow in Cleve & Grunow) Cleve-Euler
F. rhomboides var. amphipleuroides (Grunow in Cleve & Grunow) De Toni
F. crassinervia (Brébisson) Lange-Bertalot & Krammer in Lange-Bertalot & Metzeltin
F. rhomboides var. crassinervia (Brébisson) Ross
F. rhomboides var. saxonica f. undulata Hustedt
F. elongatissima (Krieger) Lange-Bertalot in Lange-Bertalot & Jahn
F. rhomboides var. elongatissima Manguin in Bourrelly & Manguin
F. erifuga Lange-Bertalot & Krammer in Lange-Bertalot & Metzeltin
F. rhomboides var. viridula (Brébisson ex Kutzing) Cleve
F. krammeri Lange-Bertalot & Metzeltin in Metzeltin & Lange-Bertalot
F. rhomboides auct. non Navicula rhomboides Ehrenberg
F. saxonica Rabenhorst
F. rhomboides var. saxonica (Rabenhorst) De Toni
? F. rhomboides f. capitata (Mayer) Hustedt
F. vulgaris (Thwaites) De Toni
F. weinholdii Hustedt
GEISSLERIA Lange-Bertalot & Metzeltin 1996
G. acceptata (Hustedt) Lange-Bertalot et Metzeltin
Navicula acceptata Hustedt
G. decussis (Østrup) Lange-Bertalot & Metzeltin
Navicula decussis Østrup
G. ignota (Krasske) Lange-Bertalot & Metzeltin
Navicula ignota Krasske
G. paludosa (Hustedt) Lange-Bertalot & Metzeltin
G. ignota var. palustris (Hustedt) Lange-Bertalot & Metzeltin
Navicula paludosa Hustedt
Navicula ignota var. palustris (Hustedt) Lund
G. schoenfeldii (Hustedt) Lange-Bertalot & Metzeltin
Navicula schoenfeldii Hustedt
GOMPHOCYMBELLOPSIS Krammer 2003
G. ancyli (Cleve) Krammer
Gomphocymbella ancyli (Cleve) Hustedt
GOMPHONEIS Cleve 1894
G. heterominuta Mayama & Kawashima in Mayama et al.
Gomphonema minutum Agardh
G. olivacea (Hornemann) Dawson ex Ross & Sims
Gomphonema olivaceum (Hornemann) Kützing
G. olivacea var. calcarea (Cleve) Hartley
Gomphonema olivaceum var. calcarea Cleve
G. olivaceoides (Hustedt) Carter in Carter & Bailey-Watts
Gomphonema olivaceoides Hustedt
G. rhombica (Fricke) Merino, García, Hernández-Mariné & Fernández
Gomphonema rhombicum Fricke in Schmidt
GOMPHONEMA Ehrenberg 1832
G. abbreviatum (Agardh) Kützing
G. acuminatum Ehrenberg
G. acuminatum var. coronatum (Ehrenberg) W. Smith
G. acuminatum var. elongatum (W. Smith) Carruthers in Gray
G. acuminatum var. trigonocephalum (Ehrenberg) Grunow in Van Heurck
G. angustatum (Kützing) Rabenhorst
G. angustatum f. productum (Grunow) Mayer
G. angustatum var. sarcophagus (Gregory) Grunow in Van Heurck
G. angustum Agardh
G. apicatum Ehrenberg
G. augur Ehrenberg
G. augur var. gautierii Van Heurck
G. augur var. turris (Ehrenberg) Lange-Bertalot in Krammer & Lange-Bertalot
G. acuminatum var. turris (Ehrenberg) Cleve
G. brebissonii Kützing
G. acuminatum var. brebissonii (Kützing) Grunow in Van Heurck
G. clavatum Agardh
G. clevei Fricke in Schmidt
G. dichotomum Kützing
G. intricatum Kützing
G. intricatum var. dichotomum (Kützing) Grunow in Van Heurck
G. gracile Ehrenberg
G. gracile var. lanceolatum (Kützing) Cleve
G. grunowii Patrick & Reimer
G. lanceolatum Ehrenberg
G. hebridense Gregory
G. lagerheimii A. Cleve
? G. lagerheimii f. simplex Foged
G. helveticum Brun
G. helveticum var. undulatum Mayer
G. longiceps Ehrenberg
G. longiceps f. gracilis Hustedt
G. longiceps var. subclavatum Grunow
G. longiceps f. suecica (Grunow in Van Heurck) Hustedt
G. montanum Schumann
G. longiceps var. montana (Schumann) Hustedt
G. parvulum(Kützing) Kützing
G. parvulum var. lagenula (Kützing) Frenguelli
G. parvulum var. micropus (Kützing) Cleve
G. productum Lange-Bertalot & Reichardt in Lange-Bertalot
G. angustatum var. productum Grunow in Van Heurck
G. pumilum (Grunow) Lange-Bertalot & Reichardt
G. intricatum var. pumila Grunow in Van Heurck
G. sphaerophorum Ehrenberg
G. subtile Ehrenberg
G. subtile var. sagitta (Schumann) Cleve
G. tergestinum (Grunow in Van Heurck) Fricke in Schmidt
G. truncatum Ehrenberg
G. constrictum Ehrenberg
G. truncatum var. capitatum (Ehrenberg) Patrick
G. constrictum var. capitatum (Ehrenberg) Grunow
G. ventricosum Gregory
G. vibrio Ehrenberg
G. vibrio var. fossile (Pantocsek) Ross
G. intricatum var. fossilis Pantocsek
G. vibrio var. intricatum (Kützing) Ross in Hartley
G. vibrio var. pusillum (A. Mayer) Ross in Hartley
G. intricatum var. pusillum Mayer
G. vibrioides Krammer & Lange-Bertalot
G. intricatum var. vibrio (Ehrenberg) Cleve
GYROSIGMA Hassall 1845
G. acuminatum (Kützing) Rabenhorst
G. spencerii Cleve
G. attenuatum (Kützing) Rabenhorst
G. kuetzingii (Grunow) Cleve
G. nodiferum (Grunow) Reimer
G. spencerii var. nodifera (Grunow) Cleve
G. obtusatum (Sullivant & Wormley) Boyer
G. scalproides (Rabenhorst) Cleve
HALAMPHORA (Cleve) Levkov 2009
H. montana (Krasske) Levkov
Amphora montana Krasske
H. normannii (Rabenhorst) Levkov
Amphora normannii Rabenhorst
H. oligotraphenta (Lange-Bertalot in Lange-Bertalot & Metzeltin) Levkov
Amphora oligotraphenta Lange-Bertalot in Lange-Bertalot & Metzeltin
Amphora veneta var. capitata E. Haworth
H. thumensis (Mayer) Levkov
Amphora thumensis (Mayer) Krieger
Cymbella thumensis (Mayer) Hustedt
H. veneta (Kützing ) Levkov
Amphora veneta Kützing
HANNAEA Patrick in Patrick & Reimer 1966
H. arcus (Ehrenberg) Patrick in Patrick & Reimer
Ceratoneis arcus (Ehrenberg) Kützing
Fragilaria arcus (Ehrenberg) Cleve
H. arcus var. amphioxys (Rabenhorst) Patrick
Ceratoneis arcus var. amphioxys (Rabenhorst) Brun
H. arcus var. linearis (Holmboe) Foged
Ceratoneis arcus var. linearis Holmboe
HANTZSCHIA Grunow 1877
H. amphioxys (Ehrenberg) Grunow
? H. amphioxys var. maior Grunow in Van Heurck
? H. amphioxys var. vivax Grunow in Cleve & Grunow
H. elongata (Hantzsch) Grunow
HIPPODONTA Lange-Bertalot, Witkowski, & Metzeltin 1996
H. capitata (Ehrenberg) Lange-Bertalot, Metzeltin & Witkowski
Navicula hungarica var. capitata (Ehrenberg) Cleve
H. costulata (Grunow) Lange-Bertalot, Metzeltin & Witkowski
Navicula costulata Grunow in Cleve & Grunow
H. hungarica (Grunow) Lange-Bertalot, Metzeltin & Witkowski
Navicula hungarica Grunow
H. lueneburgensis (Grunow) Lange-Bertalot, Metzeltin & Witkowski
Navicula hungarica var. lueneburgensis Grunow
HYGROPETRA Krammer & Lange-Bertalot in Krammer 2000
H. balfouriana (Grunow ex Cleve) Krammer & Lange-Bertalot in Krammer
Pinnularia balfouriana Grunow ex Cleve
KARAYEVIA Round & Bukhtiyarova ex Round 1998
K. clevei (Grunow in Cleve & Grunow) Round & Bukhtiyarova
Achnanthes clevei Grunow in Cleve & Grunow
K. clevei f. rostrata (Hustedt) Levkov & Krstic in Levkov et al.
Achnanthes clevei var. rostrata Hustedt
K. laterostrata (Hustedt) Round & Bukhtiyarova
Achnanthes laterostrata Hustedt
KOBAYASIELLA Lange-Bertalot 1999
K. subtilissima (Cleve) Lange-Bertalot
Navicula subtilissima Cleve
Kobayasia subtilissima (Cleve) Lange-Bertalot
KOLBESIA Round & Bukhtiyarova ex Round 1998
K. kolbei (Hustedt) Round & Bukhtiyarova
Achnanthes kolbei Hustedt
K. ploenensis (Hustedt) Round & Bukhtiyarova
Achnanthes ploenensis Hustedt
K. suchlandtii (Hustedt) Kingston
Achnanthes suchlandtii Hustedt
LEMNICOLA Round & Basson 1997
L. hungarica (Grunow) Round & Basson
Achnanthes hungarica Grunow
LUTICOLA D. Mann in Round et al. 1990
L. cohnii (Hilse) D. Mann in Round et al.
Navicula mutica var. cohnii (Hilse) Grunow in Van Heurck
L. mutica (Kützing) D. Mann in Round et al.
Navicula mutica Kützing
? Navicula mutica f. lanceolata (Frenguelli) Hustedt
L. plausibilis (Hustedt ex Simonsen) D. Mann in Round et al.
Navicula plausibilis Hustedt
MASTOGLOIA Thwaites in W. Smith 1856
M. braunii Grunow
M. elliptica (Agardh) Cleve ex Schmidt
M. elliptica var. dansei (Thwaites) Cleve
M. grevillei W. Smith
M. smithii Thwaites ex W. Smith
M. smithii var. amphicephala Grunow in Van Heurck
M. smithii var. lacustris Grunow
MAYAMAEA Lange-Bertalot 1997
M. atomus (Kützing) Lange-Bertalot
Navicula atomus (Kützing) Grunow
M. excelsa (Krasske) Lange-Bertalot
Navicula excelsa Krasske
MELOSIRA Agardh 1827
M. arentii (Kolbe) Nagumo & Kobayasi
Cyclotella arentii Kolbe
M. undulata (Ehrenberg) Kützing
M. undulata var. normanii Arnott in Van Heurck
M. varians Agardh
MERIDION Agardh 1824
M. circulare (Greville) Agardh
M. circulare var. constrictum (Ralfs) Van Heurck
NAVICULA Bory 182212
N. aboensis (Cleve) Hustedt
N. angusta Grunow
N. cari var. angusta (Grunow) Grunow in Van Heurck
N. cincta var. angusta (Grunow) Cleve
N. bicontracta sensu Hustedt
N. capitatoradiata Germain
N. cryptocephala var. intermedia Grunow in Van Heurck
N. salinarum var. intermedia (Grunow in Van Heurck) Cleve
N. cari Ehrenberg
? N. graciloides Mayer
N. cincta (Ehrenberg) Ralfs in Pritchard
N. cincta var. heufleri (Grunow) Grunow in Van Heurck
N. concentrica Carter
N. lanceolata var. cymbula (Donkin) Cleve
N. cryptocephala Kützing
N. cryptotenella Lange-Bertalot in Krammer & Lange-Bertalot
N. radiosa var. tenella (Brébisson in Kutzing) Cleve & Möller
N. dicephala var. chiliensis Hustedt13
N. dicephala f. cuneata (M. Møller) Foged13
N. digitoconvergens Lange-Bertalot in Lange-Bertalot & Genkal
N. digitoradiata var. elliptica (Østrup) Cleve-Euler
N. digna Hustedt
N. exilis Kützing
N. cryptocephala var. exilis Grunow in Van Heurck
N. farta Hustedt in Schmidt
N. frugalis Hustedt
N. globosa Meister
N. glomus Carter & Bailey-Watts
N. gottlandica Grunow in Van Heurck
N. helvetica Brun
N. gregaria Donkin
N. grimmei Krasske in Hustedt
N. impexa Hustedt
N. jaagii Meister
N. jentzschii Grunow
N. kotschyi Grunow
N. lanceolata (Agardh) Kützing
N. avenacea (Brébisson) Brébisson ex Grunow
N. libonensis Schoeman
N. certa Hustedt (Foged 1977, misidentification)
N. menisculus Schumann
N. menisculus var. obtusa Hustedt14
N. meniscus Schumann
N. modica Hustedt
N. neoventricosa Hustedt
N. oblonga (Kützing) Kützing
N. oppugnata Hustedt
N. paanaensis Cleve-Euler
N. peregrina (Ehrenberg) Kützing
N. peterseni Hustedt
N. peterseni f. undulata Foged
N. phyllepta Kützing
N. platystoma var. minor Schulz
N. pseudolanceolata Lange-Bertalot
N. radiosa Kützing
N. reinhardtii Grunow in Van Heurck
N. reinhardtii var. elliptica Lauby
N. rhynchocephala Kützing
N. rotaeana (Rabenhorst) Grunow in Van Heurck
N. salinarum Grunow
N. semen Ehrenberg emend. Donkin
N. slesvicensis Grunow in Van Heurck
N. subrotundata Hustedt
N. torneensis Cleve
N. tridentula Krasske
N. tripunctata (O. F. Müller) Bory
N. gracilis Ehrenberg
N. trivialis Lange-Bertalot
N. upsaliensis (Grunow) Peragallo
N. menisculus var. upsaliensis Grunow in Cleve & Grunow
N. veneta Kützing
N. cryptocephala var. veneta (Kützing) Rabenhorst
N. viridula (Kützing) Kützing
N. viridula f. capitata (Mayer) Hustedt
N. viridula f. linearis (Hustedt) Kobayasi in Mayama et al.
N. viridula var. linearis Hustedt
N. vulpina Kützing
NAVICULADICTA Lange-Bertalot in Lange-Bertalot & Moser 1994
N. vitabunda (Hustedt) Lange-Bertalot in Lange-Bertalot & Moser
Navicula vitabunda Hustedt
NAVICYMBULA Krammer 2003
N. pusilla (Grunow in Schmidt) Krammer
Cymbella pusilla Grunow in Schmidt
NEIDIUM Pfitzer 1871
N. affine (Ehrenberg) Pfitzer
N. affine var. amphirhynchus (Ehrenberg) Cleve
N. affine var. capitata Mölder
N. affine var. humerus Reimer in Patrick & Reimer
N. affine var. longiceps (Gregory) Cleve
N. alpinum Hustedt
N. amphigomphus (Ehrenberg) Pfitzer
N. iridis var. amphigomphus (Ehrenberg) Van Heurck
N. ampliatum (Ehrenberg) Krammer
N. iridis var. ampliata (Ehrenberg) Cleve
N. binodis (Ehrenberg) Hustedt
N. bisulcatum (Lagerstedt) Cleve
N. dubium (Ehrenberg) Cleve
N. dubium var. constrictum Hustedt
N. hercynicum Mayer
N. hitchcockii (Ehrenberg) Cleve
N. iridis (Ehrenberg) Cleve
N. ladogense (Cleve) Foged
N. productum (W. Smith) Cleve
N. tenuissimum Hustedt
N. vernale (Reichelt ex Hustedt) Metzeltin & Lange-Bertalot
N. iridis f. vernalis Reichelt ex Hustedt
NITZSCHIA Hassall 1845
N. acicularis (Kützing) W. Smith
N. acula (Kützing) Hantzsch in Rabenhorst
N. acuta Hantzsch (Foged, sic)
N. acuta Peragallo & Peragallo
N. amphibia Grunow
N. bremensis Hustedt in Schmidt
N. capitellata Hustedt in Schmidt
N. palea var. tenuirostris Grunow in Van Heurck
N. communis Rabenhorst
N. commutata Grunow in Cleve & Grunow
N. dissipata (Kützing) Grunow
N. dubia W. Smith
N. filiformis (W. Smith) Van Heurck
N. fonticola Grunow in Cleve & Möller
N. romana (Grunow) Grunow in Van Heurck
N. frustulum (Kützing) Grunow in Cleve & Grunow
N. frustulum var. perpusilla (Rabenhorst) Grunow
? N. frustulum var. subsalina Hustedt
N. gracilis Hantzsch
N. hantzschiana Rabenhorst
N. harderi Hustedt in Brendemühl
N. heufleriana Grunow
N. lauenburgiana Hustedt
N. homburgiensis Lange-Bertalot
N. thermalis (Kützing) Auerswald in Rabenhorst
N. thermalisvar. minor Hilse
N. inconspicua Grunow
N. linearis (Agardh) W. Smith
N. linearis var. tenuis (W. Smith) Grunow in Cleve & Grunow
N. tenuis (W. Smith) Grunow in Van Heurck
N. nana Grunow in Van Heurck
N. ignorata Krasske
N. palea (Kützing) W. Smith
N. palea f. maior Rabenhorst
N. pilum Hustedt
N. paleacea (Grunow) Grunow in Van Heurck
N. paleaeformis Hustedt
N. palustris Hustedt
N. perminuta (Grunow) Peragallo
N. hiemalis Hustedt
N. pusilla Grunow emend. Lange-Bertalot
N. kuetzingiana Hilse ex Rabenhorst
N. parvula Grunow ms.
N. recta Hantzsch in Rabenhorst
N. vacua Hustedt
N. rectiformis Hustedt
N. sigmoidea (Nitzsch) W. Smith
N. sinuata (W. Smith) Grunow in Cleve & Grunow
N. sinuata var. tabellaria (Grunow) Grunow in Van Heurck
N. terrestris (Petersen) Hustedt
N. umbonata (Ehrenberg) Lange-Bertalot
N. stagnorum Rabenhorst
NUPELA Vyverman & Compère 1991
N. lapidosa (Krasske) Lange-Bertalot
Achnanthes lapidosa Krasske
N. tenuicephala (Hustedt) Lange-Bertalot
Navicula tenuicephala Hustedt
ORTHOSEIRA Thwaites 1849
O. roeseana (Rabenhorst) O’Meara
Melosira roeseana Rabenhorst
PARLIBELLUS Cox 1988
P. crucicula (W. Smith) Witkowski, Lange-Bertalot & Metzeltin
Navicula crucicula (W. Smith) Donkin
P. protracta (Grunow) Witkowski, Lange-Bertalot & Metzeltin
Navicula protracta (Grunow in Cleve & Grunow) Cleve
P. protracta var. elliptica (Gallik) Aboal in Aboal et al.
Navicula protracta var. elliptica Gallik
PERONIA Brébisson & Arnott ex Kitton 1868
P. heribaudi Brun & Peragallo in Héribaud
PINNULARIA Ehrenberg 1843
P. acrosphaeria W. Smith
P. acuminata W. Smith
P. hemiptera (Kützing) sensu Cleve, Hustedt
P. alpina W. Smith
P. angulosa Krammer
P. borealis var. brevicostata Hustedt
P. borealis var. brevistriata Hustedt (Foged, sic)
P. angusta (Cleve) Krammer
P. mesolepta var. angusta Cleve
P. appendiculata (Agardh) Cleve
P. biceps Gregory
P. interrupta W. Smith
P. biceps var. gibberula (Hustedt) Krammer
P. interrupta var. gibberula Hustedt
P. bipectinalis (Schumann) Cleve-Euler
P. borealis Ehrenberg
P. brebissonii (Kützing) Rabenhorst
P. microstauron var. brebissonii (Kützing) Hustedt
P. brevicostata Cleve15
P. cardinalis (Ehrenberg) W. Smith
P. clevei Patrick
P. esox Ehrenberg sensu Cleve, Hustedt16
P. divergens W. Smith
P. divergens var. undulata (Peragallo & Héribaud in Héribaud) Hustedt
P. divergentissima (Grunow in Van Heurck) Cleve
P. divergentissima var. undulata Cleve-Euler
P. erratica Krammer
P. gibba var. mesogongyla sensu Hustedt
P. gentilis (Donkin) Cleve
P. gibba Ehrenberg
P. abaujensis (Pantocsek) Ross
P. gigas Ehrenberg
P. dactylus Ehrenberg
P. globiceps Gregory
P. gracillima Gregory
P. iatriaensis Foged
P. imperfecta Cleve-Euler
P. inconstans Mayer
P. hemiptera var. inconstans (Mayer) Hustedt
P. intermedia (Lagerstedt) Cleve
P. irrorata (Grunow in Van Heurck) Hustedt
P. islandica Østrup
P. lange-bertalotii Krammer
P. gibba f. subundulata Mayer ex Hustedt
P. lata (Brébisson) Rabenhorst
P. mayeri Krammer
P. braunii var. amphicephala (Mayer) Hustedt
P. mesogongyla Ehrenberg
P. gibba var. mesogongyla (Ehrenberg) Hustedt
P. mesolepta (Ehrenberg) W. Smith
P. microstauron (Ehrenberg) Cleve
P. neomajor Krammer
P. major (Kützing) Rabenhorst
P. nobilis (Ehrenberg) Ehrenberg
P. nodosa (Ehrenberg) W. Smith
P. obscura Krasske
P. oriunda Krammer
P. viridis var. leptogongyla Cleve
P. ovata Krammer
P. divergens var. elliptica (Grunow) Cleve
P. platycephala (Ehrenberg) Cleve
P. pulchra Østrup
P. rupestris Hantzsch in Rabenhorst
P. schoenfelderi Krammer
P. microstauron var. brebissonii f. diminuta (Grunow) Hustedt
P. stomatophora (Grunow in Schmidt) Cleve
P. streptoraphe Cleve
P. subcapitata Gregory
P. hilseana Janisch in Hilse
P. subcapitata var. hilseana (Janisch ex Rabenhorst) O. Müller
P. subgibba Krammer
? P. gibba var. linearis Hustedt
P. subinterrupta Krammer & Schroeter in Krammer
P. interrupta var. minutissima Hustedt
P. subrupestris Krammer
? P. viridis var. fallax Cleve
P. subsolaris (Grunow) Cleve
P. sudetica (Hilse) Hilse in Rabenhorst
P. viridis var. sudetica (Hilse) Hustedt
P. undula (Schumann) Krammer
P. legumen Ehrenberg17
P. viridiformis Krammer
P. viridis (Nitzsch) Ehrenberg
PLACONEIS Mereschkowsky 1903
P. abiskoensis (Hustedt) Lange-Bertalot & Metzeltin in Metzeltin & Witkowski
Navicula abiskoensis Hustedt
P. amphibola (Cleve) Cox
Navicula amphibola Cleve
P. anglica (Ralfs in Pritchard) Cox
Navicula anglica Ralfs in Pritchard
P. clementioides (Hustedt) Cox
Navicula clementioides Hustedt
P. clementis (Grunow) Cox
Navicula clementis Grunow
P. dicephala (Ehrenberg) Mereschkowsky
Navicula dicephala Ehrenberg
P. elginensis (Gregory) Cox
P. elginensis f. exigua (Gregory) Bukhtiyarova
Navicula exigua (Gregory) Grunow in Van Heurck
P. explanata (Hustedt) A. Mayama in S. Mayama & A. Kawashima
Navicula explanata Hustedt
P. gastrum (Ehrenberg) Mereschkowsky
Navicula gastrum (Ehrenberg) Kützing
P. placentula (Ehrenberg) Mereschkowsky
Navicula placentula (Ehrenberg) Kützing
P. placentula var. jenisseyensis (Grunow) Bukhtiyarova
Navicula placentula f. jenisseyensis (Grunow) Meister
P. placentula f. rostrata (Mayer) Bukhtiyarova
Navicula placentula var. rostrata Mayer
P. porifera (Hustedt) Cox
Navicula porifera Hustedt
P. porifera var. opportuna (Hustedt) Novelo et al.
Navicula porifera var. opportuna (Hustedt) Lange-Bertalot
in Krammer & Lange- Bertalot
Navicula opportuna Hustedt
P. undulata (Østrup) Lange-Bertalot in U. Rumrich et al.
N. dicephala var. undulata Østrup
PLANOTHIDIUM Round & Bukhtiyarova 1996
P. calcar (Cleve) Round & Bukhtiyarova
Achnanthes calcar Cleve
P. conspicuum (Mayer) Morales
Achnanthes conspicua Mayer
P. delicatulum (Kützing) Round & Bukhtiyarova
Achnanthes delicatula (Kützing) Grunow
P. dispar (Cleve) Witkowski, Lange-Bertalot & Metzeltin
Achnanthes dispar Cleve
P. ellipticum (Cleve) Round & Bukhtiyarova
Achnanthes lanceolata f. elliptica Hustedt
Achnanthes lanceolata var. elliptica Cleve
P. hauckianum (Grunow) Round & Bukhtiyarova
Achnanthes hauckiana Grunow
P. lanceolatum (Brébisson) Round & Bukhtiyarova
Achnanthes lanceolata (Brébisson) Grunow
P. oestrupii (Cleve-Euler) Round & Bukhtiyarova
Achnanthes oestrupii (A. Cleve) Hustedt
P. peragallii (Brun & Héribaud) Round & Bukhtiyarova
Achnanthes peragalli Brun & Héribaud
P. rostratum (Østrup) Round & Bukhtiyarova
Achnanthes rostrata Østrup
Achnanthes lanceolata f. rostrata (Østrup) Hustedt
PLATESSA Lange-Bertalot in Krammer & Lange-Bertalot 2004
P. rupestris (Krasske) Lange-Bertalot in Krammer & Lange-Bertalot
Achnanthes rupestris Krasske
PRESTAURONEIS Bruder & Medlin 2008
P. integra (W. Smith) Bruder in Bruder & Medlin
Navicula integra (W. Smith) Ralfs in Pritchard
PSAMMOTHIDIUM Bukhtiyarova & Round 1996
P. didymum (Hustedt) Bukhtiyarova & Round
Achnanthes didyma Hustedt
P. lacus-vulcani (Lange-Bertalot & Krammer) Bukhtiyarova in Bukhtiyarova & Round
Achnanthes lacus-vulcani Lange-Bertalot & Krammer
P. marginulatum (Grunow) Bukhtiyarova & Round
Achnanthes marginulata Grunow
P. montanum (Krasske) Mayama in Mayama, Idei, Osada, & Nagumo
Achnanthes montana Krasske
P. pseudoswazi (Carter) Bukhtiyarova & Round
Achnanthes pseudoswazi Carter
PSEUDOPODOSIRA A.P. Jousé in A.I. Proschkina-Lavrenko 1949
P. elliptica (Schumann) Edlund, Morales & Spaulding
Fragilaria elliptica Schumann
PSEUDOSTAUROSIRA Williams & Round 1988
P. binodis (Ehrenberg) Edlund in Edlund et al.
P. brevistriata (Grunow in Van Heurck) Williams & Round
Staurosira brevistriata (Grunow in Van Heurck) Grunow
Fragilaria brevistriata Grunow in Van Heurck
PUNCTICULATA Håkansson 2002
P. comta (Ehrenberg) Håkansson
Cyclotella comta (Ehrenberg) Kützing
P. radiosa (Lemmermann) Håkansson
? Cyclotella kuetzingiana var. radiosa Fricke
REIMERIA Kociolek & Stoermer 1987
R. sinuata (Gregory) Kociolek & Stoermer
Cymbella sinuata Gregory
R. sinuata f. antiqua (Grunow) Kociolek & Stoermer
Cymbella sinuata f. antiqua (Grunow) Reimer in Patrick & Reimer
R. sinuata f. ovata (Hustedt) Hartley
Cymbella sinuata f. ovata Hustedt
RHOICOSPHENIA Grunow 1860
R. abbreviata (Agardh) Lange-Bertalot
R. curvata (Kützing) Grunow
RHOPALODIA O. Müller 1895
R. gibba (Ehrenberg) O. Müller
R. gibba var. parallela (Grunow) Peragallo & Peragallo
R. parallela (Grunow) O. Müller
R. gibba var. ventricosa (Kützing) Peragallo & Peragallo
R. gibberula (Ehrenberg) O. Müller
R. musculus (Kützing) O. Müller
ROSSITHIDIUM Round & Bukhtiyarova 1996
R. linearis (W. Smith) Round & Bukhtiyarova
Achnanthes linearis (W. Smith) Grunow
R. pusillum (Grunow) Round & Bukhtiyarova
Achnanthes linearis var. pusilla Grunow
SELLAPHORA Mereschkowsky 1902
S. americana (Ehrenberg) D. Mann
S. bacillum (Ehrenberg) D. Mann
Navicula bacillum Ehrenberg
S. disjuncta (Hustedt) D. Mann
Navicula disjuncta Hustedt
? Navicula disjuncta f. anglica Hustedt
S. hustedtii (Krasske) Lange-Bertalot & Werum in Werum & Lange-Bertalot
Navicula hustedtii Krasske
S. laevissima (Kützing) D. Mann
S. pupula (Kützing) Mereschkowsky
Navicula pupula Kützing
? Navicula pupula f. capitata Skvortzow & Meyer
S. rectangularis (Gregory) Lange-Bertalot & Metzeltin
Navicula pupula var. rectangularis (Gregory) Cleve & Grunow
S. rostrata (Hustedt) Johansen in Johansen et al.
Navicula pupula f. rostrata (Hustedt) Hustedt
S. seminulum (Grunow) D. Mann
? Navicula seminulum var. intermedia Hustedt
S. vitabunda (Hustedt) D. Mann
Navicula vitabunda Hustedt
S. wittrockii (Lagerstedt) Lange-Bertalot & Metzeltin in Metzeltin et al.
Navicula wittrockii (Lagerstedt) Tempère & Peragallo
STAURONEIS Ehrenberg 1843
S. acuta W. Smith
S. agrestis Petersen
S. alpina Hustedt
S. anceps Ehrenberg
S. anceps var. hyalina Peragallo & Brun in Héribaud
S. finlandia Bahls
S. gracilior Reichardt
S. anceps f. gracilis Rabenhorst
S. gracilis Ehrenberg
S. phoenicenteron f. gracilis (Ehrenberg) Hustedt
S. heinii Lange-Bertalot & Krammer
S. kriegeri Patrick
S. lapponica A. Cleve
S. legumen (Ehrenberg) Kützing
S. obtusa Lagerstedt
S. palustris Hustedt
S. cf. pergracilis Van de Vijver & Lange-Bertalot
S. phoenicenteron (Nitzsch) Ehrenberg
S. phoenicenteron var. brunii (Peragallo & Héribaud) Voigt
S. producta Grunow in Van Heurck
S. prominula (Grunow in Cleve & Möller) Hustedt
S. siberica (Grunow in Cleve & Grunow) Lange-Bertalot & Krammer
in Lange-Bertalot & Metzeltin
S. anceps var. siberica Grunow in Cleve & Grunow
S. smithii Grunow
S. smithii var. borgei (Manguin) Hustedt
S. smithii var. incisa Pantocsek
S. supergracilis Van de Vijver & Lange-Bertalot
S. superkuelbsii Bahls
S. ursamaioris Lange-Bertalot & Van de Vijver
S. javanica (Grunow) Cleve18
STAUROSIRA Ehrenberg 1843
S. bidens (Heiberg) Grunow
Fragilaria bidens Heiberg
S. construens Ehrenberg
Fragilaria construens (Ehrenberg) Grunow
S. construens var. exigua (W. Smith) Krammer & Lange-Bertalot
Fragilaria construens var. exigua (W. Smith) Schulz
S. construens var. triundulata (Reichelt) H. Kobayasi in Mayama et al.
Fragilaria construens var. triundulata Reichelt
S. subsalina (Hustedt) Lange-Bertalot in Krammer & Lange-Bertalot
Fragilaria construens var. subsalina Hustedt
S. venter (Ehrenberg) Cleve & Möller
Fragilaria construens var. venter (Ehrenberg) Grunow
STAUROSIRELLA Williams & Round 1988
S. dubia (Grunow) Morales & Manoylov
Fragilaria leptostauron var. dubia (Grunow) Hustedt
S. lapponica (Grunow) Williams & Round
Fragilaria lapponicaGrunow
S. leptostauron (Ehrenberg) Williams & Round
Fragilaria leptostauron (Ehrenberg) Hustedt
S. martyi (Héribaud) Morales & Manoylov
Opephora martyi Héribaud
S. pinnata (Ehrenberg) Williams & Round
Fragilaria pinnata Ehrenberg
S. pinnata var. trigona (Brun & Héribaud) Aboal & Silva
Fragilaria pinnata var. trigona (Brun & Héribaud) Hustedt
STENOPTEROBIA Brébisson ex Van Heurck 1896
S. capitata (Fontell) Thunmark
S. intermedia var. capitata Fontell
S. curvula (W. Smith) Krammer
S. intermedia (Lewis) Van Heurck
? S. intermedia f. subacuta Hustedt in Schmidt
S. delicatissima (Lewis) Brébisson ex Van Heurck
Surirella delicatissima Lewis
? Surirella arctissima Schmidt
STEPHANOCYCLUS Skabitschevsky 1975
S. meneghiniana (Kützing) Skabitschevsky
Cyclotella meneghiniana Kützing
Cyclotella kuetzingiana Thwaites
STEPHANODISCUS Ehrenberg 1845
S. alpinus Hustedt in Huber-Pestalozzi
S. binderanus (Kützing) Krieger
S. hantzschii Grunow in Cleve & Grunow
S. medius Håkansson
S. minutulus (Kützing) Cleve & Möller
S. astraea var. minutula (Kützing) Grunow in Van Heurck
S. neoastraea Håkansson & Hickel
S. parvus Stoermer & Håkansson
S. rotula (Kützing) Hendey
S. astraea (Ehrenberg) Grunow
? S. astraea var. intermedia Fricke
SURIRELLA Turpin 1828
S. amphioxys W. Smith
S. angusta Kützing
S. bifrons Ehrenberg
S. biseriata var. bifrons (Ehrenberg) Hustedt
S. bifrons var. punctata Meister
S. birostrata Hustedt in Schmidt
S. biseriata Brébisson in Brébisson & Godey
S. brebissonii Krammer & Lange-Bertalot
S. ovata sensu Hustedt 1930
S. brebissonii var. kuetzingii Krammer & Lange-Bertalot
S. ovata Kützing pro parte
S. crumena Brébisson ex Kützing
S. ovata var. crumena (Brébisson) Hustedt
S. elegans Ehrenberg
S. gracilis Grunow
S. gracilis var. rostrata Foged
S. linearis W. Smith
S. linearis var. constricta Grunow
S. linearis var. helvetica (Brun) Meister
S. minima Ross & Abdin
S. minuta Brébisson in Kützing
S. ovata Kützing pro parte
S. ovata var. pinnata W. Smith
S. ovalis Brébisson
S. robusta Ehrenberg
S. robusta f. punctata Hustedt
S. simplex var. intermedia Cleve-Euler
S. spiralis Kützing
S. splendida (Ehrenberg) Kützing
S. robusta var. splendida (Ehrenberg) Van Heurck
S. suecica Grunow in Van Heurck
S. tenera Gregory
S. tenera var. nervosa Schmidt
S. turgida W. Smith
S. variabilis var. cuneata Cleve-Euler
SYNEDRA Ehrenberg 1830
S. famelica Kützing
S. minuscula Grunow in Van Heurck
Fragilaria famelica (Kützing) Lange-Bertalot
S. rumpens Kützing
Fragilaria rumpens (Kützing) Carlson
S. tenera W. Smith
Fragilaria tenera (W. Smith) Lange-Bertalot
SYNEDRELLA Round & Maidana 2001
S. parasitica (W. Smith) Round & Maidana
Fragilaria parasitica (W. Smith) Grunow in Van Heurck
Synedra parasitica (W. Smith) Hustedt
S. subconstricta (Grunow in Van Heurck) Round & Maidana
Fragilaria parasitica var. subconstricta Grunow in Van Heurck
Synedra parasitica var. subconstricta (Grunow in Van Heurck) Hustedt
TABELLARIA Ehrenberg 1840
T. binalis (Ehrenberg) Grunow
T. fenestrata (Lyngbye) Kützing
T. flocculosa (Roth) Kützing
T. fenestrata var. intermedia Grunow in Van Heurck
T. flocculosa var. asterionelloides (Grunow in Van Heurck) Knudson
TABULARIA (Kützing) Williams & Round 1986
T. fasciculata (Agardh) Williams & Round
Fragilaria fasciculata (Agardh) Lange-Bertalot
Synedra tabulata (Agardh) Kützing
TETRACYCLUS Ralfs 1843
T. emarginatus (Ehrenberg) W. Smith
T. glans (Ehrenberg) Mills
T. lacustris Ralfs
THALASSIOSIRA Cleve 1873
T. gravida Cleve
T. guillardii Hasle
T. pseudonana Hasle & Heimdal
Cyclotella nana Hustedt
T. weissflogii (Grunow) Fryxell & Hasle
T. fluviatilis Hustedt
TRYBLIONELLA W. Smith 1853
T. acuminata W. Smith
Nitzschia acuminata (W. Smith) Grunow
T. angustata W. Smith
Nitzschia angustata (W. Smith) Grunow
Nitzschia angustata var. acuta Grunow
T. compressa (Bailey) Poulin in Poulin et al.
Nitzschia punctata W. Smith
? Nitzschia hustedtiana Salah
T. constricta (Kützing) Poulin in Poulin et al.
Nitzschia apiculata (Gregory) Grunow
Nitzschia constricta (Kützing) Ralfs in Pritchard
T. debilis Arnott ex O’Meara
Nitzschia debilis (Arnott ex O’Meara) Grunow in Cleve & Grunow
T. granulata (Grunow) D. Mann in Round et al.
N. granulata Grunow in Cleve & Möller
T. hungarica (Grunow) Frenguelli
Nitzschia hungarica Grunow
T. levidensis W. Smith
Nitzschia levidensis (W. Smith) Grunow in Van Heurck
T. perversa (Grunow) D. Mann in Round et al.
Nitzschia perversa Grunow in Cleve & Grunow
T. plana var. fennica (Hustedt) Simola in Snoeijs & Balashova
Nitzschia plana var. fennica Hustedt in Schmidt
T. tryblionella (Hantzsch in Rabenhorst) Prochazka
Nitzschia tryblionella Hantzsch in Rabenhorst
T. victoriae Grunow
Nitzschia tryblionella var. victoriae (Grunow) Grunow in Cleve & Möller
ULNARIA Compère 2001
U. acus(Kützing) Aboal in Aboal et al.
Synedra acus Kützing
Fragilaria acus (Kützing) Lange-Bertalot in Krammer & Lange-Bertalot
U. amphirhynchus (Ehrenberg) Compère & Bukhtiyarova
Synedra ulna var. amphirhynchus (Ehrenberg) Grunow
U. ulna var. amphirhynchus (Ehrenberg) Aboal in Aboal et al.
U. biceps (Kützing) Compère
Synedra ulna var. biceps (Kützing) Kirchner in Cohn
Fragilaria biceps (Kützing) Lange-Bertalot
U. capitata (Ehrenberg) Compère
Synedra capitata Ehrenberg
Fragilaria dilatata (Brébisson) Lange-Bertalot
U. danica(Kützing) Compère & Bukhtiyarova in Bukhtiyarova & Compère
Synedra ulna var. danica (Kützing) Van Heurck
Fragilaria danica (Kützing) Lange-Bertalot in Lange-Bertalot & Metzeltin
U. delicatissima var. angustissima (Grunow in Van Heurck) Aboal in Aboal et al.
Synedra acus var. angustissima Grunow in Van Heurck
U. oxyrhynchus (Kützing) Aboal in Aboal et al.
Synedra ulna var. oxyrhynchus (Kützing) O'Meara
U. ulna (Nitzsch) Compère
Synedra ulna (Nitzsch) Ehrenberg
Fragilaria ulna (Nitzsch) Lange-Bertalot
U. ulna var. aequalis (Kützing) Aboal in Aboal et al.
Synedra ulna var. aequalis (Kützing) Hustedt
U. ulna var. spathulifera (Grunow in Van Heurck) Aboal in Aboal et al.
Synedra ulna var. spathulifera (Grunow in Van Heurck) Grunow in Van Heurck
UROSOLENIA Round & Crawford in Round et al. 1990
U. eriensis (H. L. Smith) Round & Crawford in Round et al.
Rhizosolenia eriensis H. L. Smith
U. longiseta (Zacharias) Edlund & Stoermer
Rhizosolenia longiseta Zacharias
ENDNOTES
12. Navicula sensu stricto has been significantly restricted in scope by Lange-Bertalot, inter alia. Many of the taxa listed here do not properly belong in the genus, but have not yet been placed elsewhere.
13. This taxon should be formally moved to Placoneis, if valid.
14. According to Lange-Bertalot (2001: p. 24) this taxon is known only from two specimens found in a waterfall on Sumatra.
15. Krammer argues that this name has been used for several distinct taxa. Specimens should be reexamined.
16. Krammer suggests that P. esox Ehrenberg is actually a Caloneis. Cleve apparently confused this form with a true Pinnularia, which was later named P. clevei Patrick.
17. Ehrenberg's original description included several triundulate taxa, according to Cleve, and it is not possible to determine which one the name was intended to refer to. Krammer accordingly resurrected Navicula undula Schumann as the eldest description that corresponds to the modern concept of the taxon.
18. Stauroneis javanica (Grunow) Cleve apparently does not occur in the northern hemisphere. The name S. ursamaioris Lange-Bertalot & Van de Vijver was created for the similar European taxon formerly referred to S. javanica.