Littoral zone of Brittany
Pictures of some taxa

List of diatoms
found in the littoral zone
along the southern coast of Brittany.

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When a taxus displays one or some characters differing from those given in diagnoses, the name is followed by a question mark.

When the generic name of a taxus is followed by “sp.”, this means that I was unable to propose a specific name.

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Achnanthes brevipes. Agardh
Achnanthes brevipes var intermedia (Kützing) Cleve
Achnanthes coarctata Brebisson
Achnanthes danica  (Flögel) Grunow

Achnanthes hungarica Grunow
Achnanthes javanica Grunow
Achnanthes longipes Agardh
Achnanthes parvula Kützing
Achnanthes sp.

Actinoptychus senarius (Ehrenberg) Ehrenberg
Actinoptichus splendens Shadbolt) Ralfs ex Pritchard

Actinocyclus normanii
(Gregory) Hustedt  f. subsalsus
Actinocyclus roperi (Brébisson) Grunow in Van Heurck
Actinocycvlus subtilis
(Gregory) Ralfs in Pritchard

Amphora acuta A. Schmidt
Amphora acutiuscula
Kützing  / Halamphora acutiuscula (Kützing) Levkov
Amphora arenaria Donkin
Amphora cingulata Cleve
Amphora (Halamphora) coffeaeformis (Agardh) Kützing
Amphora commutata Grunow
Amphora costata W. Smith / Halamphora costata (W. Smith) Levkov
Amphora crassa Gregory
Amphora fluminensis Grunow
Amphora holsatica Hustedt
Amphora hyalina  Kützing
Amphora inflexa Brébisson / Climaconeis inflexa (Brébisson ex Kützing) H.L. Smith
Amphora laevissima Gregory
Amphora marina W. Smith
Amphora obtusa Gregory
Amphora ostrearia Brébisson

Amphora ocellata Donkin
Amphora ovalis Kützing
Amphora proteus Gregory
Amphora pseudohyalina Simonsen
Amphora securicula Peragallo
Amphora turgida Gregory / Halamphora turgida (Gregory) Levkov
Amphora sp. : 3 taxa
 
Anomoeoneis sphaerophora  (Ehrenberg) Pfitzer
Attheya armata (T. West) Crawford in Crawford et al.
Aulacosira jurgensii (Agardh) Simonsen
Aulacosira italica (Agardh) Simonsen

Auliscus sculptus (W. Smith) Ralfs in Pritchard
Auricula complexa Gregory
Bacillaria paxillifer (O.F. Muller) Hendey var. paxillifer
Bacillaria socialis var. massilensis Grunow
Berkeleya antarctica (Harvey) Grunow in Van Heurck  
Biremis ambigua (Cleve) D.G. Mann
Brachysira serians (Brébisson) Round & D.G. mann

Caloneis aemula (Grunow ex A. Schmidt )Cleve
Caloneis arnphisbaena var. subsalina (Donkin) Cleve
Caloneis crassa
(Gregory) Ross in Hartley
Caloneis bacillum (Grunow) Mereschkowsky
Caloneis excentrica
(Grunow) Boyer
Caloneis liber
var. elongata Grunow
Caloneis liber var. umbilicata Grunow

Caloneis linearis (Grunow) Boyer
Caloneis oregonica (Ehrenberg)  Patrick
Caloneis ventricosa (Ehrenberg) Meister
Caloneis westii (W. Smith) Hendey
Caloneis sp. : 3 taxa

Campylodiscus fastuosus Ehrenberg
Campylodiscus impressus Grunow
Campylodiscus thuretii Brébisson
Campyloneis grevillei (W. Smith) Grunow
Cocconeiopsis kantsinensis (Giffen) Witkowski,Lange-Bertalot & Metzeltin

Cocconeis discrepans A. Schmidt
Cocconeis disculus ? (Schumann) Cleve
Cocconeis fluminensis (Grunow) Peragallo
Cocconeis molesta var. crucifera Grunow in Van Heurck
Cocconeis multiperforata De Stefano
Cocconeis ornata Gregory
Cocconeis peltoides Hustedt
Cocconeis placentula Ehrenberg
Cocconeis placentula var. euglypta (Ehrenberg) Cleve
Cocconeis pseudomarginata
Gregory
Cocconeis scutellum
Ehrenberg
Cocconeis scutellum var. parva Grunow
Cocconeis speciosa Gregory
Cocconeis speciosa Gregory var. obliqua
Cocconeis sp. cf. grata A. Schmidt
Cocconeis sp.
Cocconeis stauroneiformis (W. Smith) Okuno

Coscinidiscus kûtzingii
? (A. Schmidt) Simonsen
Coscinodiscus marginatus
Ehrenberg
Coscinodiscus radiatus Ehrenberg
Cosmioneis pusilla (W. Smith) D.G. Mann & A.J. Stickle in Round et al.
Cosmioneis sp.
Cyclotella meneghiniana Kützing
Cylindrotheca closterium Reimann & Lewin
Cymatopleura solea (Brebisson) W. Smith
Cymbella aspera
(Ehrenberg) Cleve
Cymbella gracilis ?
(Rabenhorst) Cleve
Cymbella ventricosa Kützing
Denticula subtilis Grunow

Diploneis apis Donkin  
Diploneis bombus Ehrenberg
Diploneis bomboides (A. Schmidt) Cleve
Diploneis caffra ? (Giffen) Witkowski, Lange-Bertalot & Metzeltin
Diploneis crabro
Ehrenberg
Diploneis didyma (Ehrenberg) Cleve
Diploneis elliptica Kützing
Diploneis eudoxia A. Schmidt
Diploneis fusca (Gregory) Cleve
Diploneis incurvata (Gregory) Cleve
Diploneis interrupta (Kützing) Cleve
Diploneis ovalis (Hilse) Cleve  
Diploneis ovalis var. oblongella (Naegeli) Cleve
Diploneis papula (A. Schmidt) Cleve
Diploneis smithii var. rhombica Mereschkowsky
Diploneis smithii (Brébisson) Cleve
Diploneis stroemi Hustedt
Diploneis suborbicularis (Gregory) Cleve
Diploneis vacillans (A. Schmidt) Cleve
Donkinia recta (Donkin) Grunow

Eunotia flexuosa
Kützing
Eunotia lunaris
(Ehrenberg) Grunow
Eunotia pectinalis
(Kützing) Rhabenhorst
Eunotia robusta Ralfs

Entomoneis alata (Ehrenberg) Ehrenberg
Entomoneis costata (Hustedt) Reimer
Entomoneis lata Greville
Entomoneis paludosa (W. Smith) Reimer
Eunotia sp.
Eunotogramma marinum (W. Smith) Peragallo

Fallacia oculiformis (Hustedt) D.G. Mann in Round et al.
Fallacia forcipata var. densestriata A Schmidt
Fallacia pygmaea (Kützing) Stickle & D.G. Mann in Round et al.
Fallacia subforcipata (Hustedt) D.G. Mann in Round et al.

Fragilaria brevistrata Grunow
Fragilaria intermedia
Grunow
Fragilaria martyi (Héribaud) Lange-Bertalot
Fragilaria pinnata
Ehrenberg
Fragilaria pulchella (Ralfs ex Kützing) Lange-Bertalot

Fragilariforma virescens (Ralfs) Williams & Round
Frustulia interposita (Lewis) De Toni
Frustulia
sp.
Frustulia vulgaris
Thwaites

Gomphonema acuminatum
Ehrenberg
Gomphonema intricatum
Kützing

Grammatophora oceanica (Ehrenberg) Grunow
Grammatophora oceanica var. macilenta A. Smith
Grammatophora serpentina (Ralfs) Ehrenberg
Grammatophora subtilissima Bailey

Gyrosigma acuminatum var. gallica  Grunow
Gyrosigma
baculum  Herwig & Sterrenburg sp. nov.
Gyrosigrna balticurn (Ehrenberg) Rabenhorst
Gyrosigma diminutum W. Smith
Gyrosigma distortum var. diaphana Cleve
Gyrosigma fasciola (Ehrenberg) Cleve
Gyrosigma fasciola var. arcuata Donkin
Gyrosigma hippocampus W. Smith
Gyrosigma littorale (W. Smith) Griffith & Henfrey
Gyrosigma macrum W. Smith
Gyrosigma scalproides Rabenhorst
Gyrosigma scalprum (Gaillon) Sterrenburg
Gyrosigma spencerii var. exilis Grunow
Gyrosigma sulcatum Grunow

Gyrosigma wansbeckii (Donkin) Cleve

Hantzschia amphioxys (Ehrenberg) Grunow
Hantzschia spectabilis
(Ehrenberg) Hustedt
Hantzschia virgata (Roper) Grunow in Cleve & Möller

Haslea crucigera (W. Smith) Simonsen 
Haslea nautica (Cholnoky) Giffen
Hippodonta lesmonensis (Hustedt) Lange-Bertalot & Metzeltin
Hyalodiscus franklini Cleve


Licmophora abbreviata Agardh
Licmophora ehrenbergii (Mereschkowsky) Hustedt
Licmophora dalmatica (Kützing) Grunow
Licmophora lyngbyei
Kützing

Lyrella abrupta (Gregory) D.G. Mann in Round et al.
Lyrella atlantica (A. Schmidt) D.G. Mann in Round et al.
Lyrella clavata (Gregory) D.G. Mann in Round et al.
Lyrella crebra  (Hustedt) DG Mann
Lyrella hennedyi (W. Smith) Stickle & D.G. Mann in Round et al.
Lyrella hennedyi var. nebulosa (Gregory) Stickle & D.G. Mann in Round et al.
Lyrella hennedyi var. neopolitana (Cleve) D.G. Mann in Round et al.
Lyrella lyra (Ehrenberg) Karayeva
Lyrella majuscula (Hustedt) Witkowski
Lyrella praetexta (Ehrenberg) D.G. Mann in Round et al.
Lyrella sandriana (Grunow) D.G. Mann in Round et al.
Lyrella spectabilis (Gregory) D.G. Mann in Round et al.

Lyrella venusta var. intermedia (Cleve) D.G. Mann in Round et al.
 
Mastogloia binotata (Grunow) Cleve
Mastogloia corsicana
Grunow in Cleve & Möller
Mastogloia crucicula (Grunow) Cleve
Mastogloia elliptica Agardh
Mastogloia emarginata
? Hustedt
Mastogloia rhombica Cleve
Mastogloia smithii Thwaites


Melosira moniliformis (Müller) Agardh
Melosira nummuloides (Dillwyn) Agardh
Melosira varians Agardh

Navicula agnita Hustedt
Navicula arenaria var. rostellata Lange-Bertalot
Navicula bottnica Grunow in Cleve & Grunow
Navicula cari Ehrenberg
Navicula cincta (Ehrenberg) Kützing
Navicula crucifera Grunow in A. Schmidt
Navicula crucicula
(W. Smith) Donkin
Navicula cryptocephala
Kützing
Navicula digitoradiata (Gregory) Ralfs in Pritchard
Navicula diversistriata Hustedt
Navicula fauta Hustedt
Navicula flagellifera ? Hustedt
Navicula gastrum ? Ehrenberg
Navicula glabriuscula
var. ellipsoidalis Proshkina-Lavrenko ?
Navicula gracilis Ehrenberg
Navicula gregaria Donkin
Navicula hungarica Grunow

Navicula kefvingensis (Ehrenberg) Kützing
Navicula longa var. irregularis Hustedt
Navicula microdigitoradiata Lange-Bertalot
Navicula mollis (W. Smith) Cleve
Navicula palpebralis Brebisson ex W. Smith var. palpebralis
Navicula palpebralis var. angulosa (Gregory) Van Heurck
Navicula palpebralis var. minor Grunow
Navicula palpebrulum Cholnoky
Navicula pavillardii
Hustedt
Navicula peregrina (Ehrenberg) Kützing
Navicula peregrinopsis Lange-Bertalot & Witkowski
Navicula phyllepta Kützing
Navicula pupula Kützing
Navicula radiosa Kützing
Navicula ramosisssima (Agardh) Cleve
Navicula rhynchocephala var. amphiceros Kützing
Navicula rhynchocephala var. elongata Mayer
Navicula salinarum Grunow
Navicula scabriuscula (Cleve & Grove) Mereschkowsky
Navicula schroeteri Meister
Navicula sieminskiae Lange-Bertalot & Witkowski
Navicula sleviscensis Grunow
Navicula sp. : 7 taxa
Navicula submolesta Hustedt
Navicula trivialis Lange-Bertalot
Navicula vandamii ? Schoeman & Archibald
Navicula viridula var. rostellata Kützing

Nitzschia acuminata (W. Smith) Grunow
Nitzschia acuta
? Hantzsch
Nitzschia angularis W. Smith
Nitzschia angularis var. affinis
Grunow
Nitzschia apiculata (Gregory) Grunow
Nitzschia aremonica Archibald
Nitzschia behrei
? Hustedt
Nitzschia bilobata
W. Smith
Nitzschia brevissima
Grunow in Van Heurck
Nitzschia capitellata Hustedt in A. Schmidt
Nitzschia clausii ? Hantzsch
Nitzschia commutata Grunow
Nitzschia compressa (Bailey) Boyer var. compressa
Nitzschia constricta (Kützing) Ralfs
Nitzschia dissipatoides Archibald
Nitzschia dubia W. Smith
Nitzschia fasciculata Grunow
Nitzschia hantzschiana Rabenhorst
Nitzschia hungarica Grunow
Nitzschia incognita Legler & Krasske
Nitzschia intercedens
Grunow
Nitzschia lanceolata W. Smith
Nitzschia lanceolata W. Smith var. minima
Nitzschia levidensis (W. Smith) Grunow in Van Heurck
Nitzschia linearis
W. Smith
Nitzschia littoralis
Grunow
Nitzschia longissima var. parva Peragallo
Nitzschia marginulata Grunow in Cleve & Möller
Nitzschia palea (Kützing) W. Smith

Nitzschia pellucida Grunow in Cleve & Grunow
Nitzschia recta Hantzsch
Nitzschia reversa W. Smith
Nitzschia scalaris (Ehrenberg) W. Smith
Nitzschia scalpelliformis (Grunow in Cleve & Möller) Grunow in Cleve & Grunow
Nitzschia sigma (Kützing) W. Smith
Nitzschia sigmoidea (Ehrenberg) W. Smith
Nitzschia sp. cf. praelonga (Cleve) De Toni
Nitzschia spathulata var. hyalina Gregory
Nitzschia sp. : 2 taxa
Nitzschia tryblionella Hantzsch
Nitzschia tubicola Grunow in Cleve & Grunow
Nitzschia vermicularis (Kützing) Grunow
Nitzschia vitrea var. salinarum Grunow
Nitzschia vitrea var. vitrea Grunow

Odontella obtusa Kützing
Oestrupia ergadensis
(Gregory) Witkowski, Lange-Bertalot & Metzeltin
Opephora mutabilis (Grunow) Sabbe & Vyverman
Parlibellus delognei (Van heurck) Cox
Parlibellus plicatus (Donkin) Cox
Petrodyction gemma Ehrenberg
Petroneis humerosa (Brébisson) Stickle & D.G. Mann in Round et al.
Petroneis marina (Ralfs) D.G. Mann in Round et al.
Pinnuavis elegans (W. Smith) Okuno

Pinnularia acrospheria de Brébisson
Pinnularia biceps
Gregory
Pinnularia braunii
(Grunow) Cleve
Pinnularia divergens
W. Smith
Pinnularia gibba
Ehrenberg
Pinnularia mesolepta
(Ehrenberg) W. Smith
Pinnularia nodosa
Ehrenberg
Pinnularia
sp.
Pinnularia viridis
Nitzsch

Placoneis clementis (Grunow) Cox
Plagiotropis gibberula
Grunow
Plagiotropis lepidoptera (Gregory) Kuntze
Planothidium campechianum (Hustedt) Witkowski, Lange-Bertalot & Metzeltin
Planothidium delicatulum (Kützing) Round & Buktyarova
Planothidium lanceolatum (Brébisson ex Kützing) Round & Bukhtiyarova

Pleurosigma angulatum (Quekett) W. Smith
Pleurosigma elongatum W. Smith
Pleurosigma aestuarii (Brebisson ex Kützing) W. Smith
Pleurosigma formosum W. Smith
Pleurosigma longum Cleve
Pleurosigma longum var. inflata Peragallo
Pleurosigma strigosum W. Smith
Pleurosigma salinarum Grunow

Pleurosira laevis (Ehrenberg) Compère
Podosira stelligera (Bailey) Mann
Psammodiscus nitidus (Gregory) Round & Mann
Psammodyction panduriforme var. continua (Grunow) Snoeijs
Rhabdonema arcuatum (Agardh) Kützing

Rhabdonema minutum Kützing
Rhopalodia musculus (Kützing) O. Müller
Scolioneis tumida (Brebisson ex Kützing) D.G. Mann in Round et al.
Scoliotropis latestriata (Brébisson ex Kützing) Cleve
Sellaphora americana
(Ehrenberg) D.G. Mann
Stauroneis amphioxys
Gregory
Stauroneis anceps Ehrenberg
Stauroneis phenicenteron
f. gracilis (Ehrenberg) Cleve
Stauroneis parvula
Grunow
Staurophora (Stauroneis) salina (W. Smith) Mereschkowsky
Stauroneis smithii ? Grunow
Stauronella decipiens (Hustedt) Lange-Bertalot in Lange-Bertalot & Genkal
Stauroneis (Craspedostauros) dubitabilis Hustedt
Stauronella (Craspedostauros) indubitabilis Lange-Bertalot & Genkal 
Striatella unipunctata (Lyngbye) Agardh

Surirella angustata Kützing
Surirella armoricana Peragallo
Surirella brightwellii W. Smith
Surirella comis A. Smith
Surirella fastuosa (Ehrenberg) Kützing
Surirella linearis W. Smith
Surirella ovata Kützing
Surirella ovata var. crumena Brébisson
Surirella reniformis
Grunow
Surirella smithii Ralfs in pritchard
Surirella striatula Turpin
Surirella sp.
Surirella tenera Gregory var. nervosa

Synedra acus Kûtzing
Synedra fasciculata Kützing
Synedra gaillonii (Bory) Ehrenberg
Synedra parasitica var. subconstricta Grunow
Synedra tabulata (Agardh) Kützing
Synedra ulna (Nitzsch) Ehrenberg

Tabellaria fenestrata
(Lyngbye) Kützing
Tabellaria floculosa
(Roth) Kützing
Tabellaria
sp.
Thalassionema frauenfeldii
(Grunow) Hallegraeff
Thalassiosira eccentrica (Ehrenberg) Cleve
Thalassiosira punctigera (Castracane) Hasle
Thalassiosira sp.
Toxarium undulatum Bailey
Trachyneis aspera A. Schmidt
Trachyneis aspera
A. Schmidt var. minuta
Trachysphenia australis Petit
Triceraatium antediluvianum
Ehrenberg
Tryblionella coarctata (Grunow) Mann
Tryblionella navicularis (Brebisson ex Kützing) Ralfs in Pritchard
Tryblionella punctata W. Smith

Vikingea sp.

Undetermined genera : 3 taxa

 
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