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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
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News
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Contact Us
What are diatoms?
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Species
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Size Range,
µm
3
11-100
101-1000
1001-10000
10001-100000
100001-1000000
Length/Diameter,
µm
Width,
µm
Stria density
per 10 μm, near center
Motility
Non-motile
Weakly motile
Slightly motile
Moderately motile
Highly motile
Attachment
Unattached
Prostrate
Tube-Forming
Vertical
Habitat
Soils
Moist habitats
Benthic
Planktonic
Milieu
Rivers
Lakes
Wetlands
Springs
Splash zones
Estuaries
Neritic
Sea Ice
Colony
Solitary
Colonies occasional
Colonies common
Biological Condition Gradient
BCG 1
BCG 2
BCG 3
BCG 4
BCG 5
Distribution
Western rivers 2004
Southeast rivers 2014
Northeast rivers 2016
Northwest rivers 2015
California coastal rivers 2017
Northeast lake sediments
Nat. Eco. Obs. Network (NEON)
Great Lakes inventory
Nitrogen Fixer
Nitrogen Fixer
Rare
Rare
Extinct
Extinct
Filters
Displaying
322
of 1106 species
GC
Genus Considered
Waterbody
All
Inland
Marine
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Achnanthidium
Achnanthidium rosenstockii
Achnanthidium subhudsonis var. kraeuselii
Achnanthidium kranzii
Achnanthidium delmontii
Adlafia
Adlafia suchlandtii
Amicula
Amicula vermiculata
Amphora
Amphora delphinea var. minor
Aneumastus
Aneumastus minor
Anomoeoneis
Anomoeoneis capitata
Anomoeoneis monoensis
Anomoeoneis costata
Aulacoseira
Aulacoseira pusilla
Aulacoseira tenella
Aulacoseira nygaardii
Aulacoseira subarctica
Aulacoseira newjerseyana
Aulacoseira islandica
Brachysira
Brachysira subtilis
Brachysira confusa
Brachysira follis
Brebissonia
Brebissonia lanceolata
Caloneis
Caloneis fusus
Campylodiscus
Campylodiscus clypeus
Capartogramma
Capartogramma crucicula
Caponea
Caponea caribbea
Cavinula
Cavinula jaernefeltii
Cavinula lapidosa
Cavinula variostriata
Chamaepinnularia
Chamaepinnularia hassiaca
Chamaepinnularia krasskei
Chamaepinnularia witkowskii
Chamaepinnularia gandrupii
Chamaepinnularia krookii
Cocconeis
Cocconeis neodiminuta
Cocconeis cascadensis
Cocconeis czarneckii
Cocconeis grovei
Cosmioneis
Cosmioneis citriformis
Craticula
Craticula subminuscula
Cylindrotheca
Cylindrotheca gracilis
Cymbella
Cymbella excisiformis
Cymbella affiniformis
Cymbella cleve-eulerae
Cymbella vulgata
Cymbella tumida
Cymbella fontinalis
Cymbella mexicana var. kamtschatica
Cymbellafalsa
Cymbellafalsa diluviana
Cymbopleura
Cymbopleura amphicephala
Cymbopleura maggieae
Cymbopleura subaequalis
Cymbopleura rupicola
Cymbopleura elliptica
Cymbopleura laszlorum
Cymbopleura incerta
Cymbopleura stauroneiformis
Cymbopleura austriaca
Delicatophycus
Delicatophycus tundraphilus
Delicatophycus canadensis
Delicatophycus montana
Delicatophycus alpestris
Denticula
Denticula kuetzingii
Diploneis
Diploneis puella
Diploneis puellafallax
Diploneis submarginestriata
Diploneis potapovae
Diploneis calcicolafrequens
Diploneis texana
Diploneis calcilacustris
Diploneis galloprovincialis
Diploneis boldtiana
Diploneis abscondita
Diploneis doncharlesii
Diploneis krammeri
Diploneis mollenhaueri
Diprora
Diprora haenaensis
Discostella
Discostella lacuskarluki
Discostella asterocostata
Distrionella
Distrionella incognita
Encyonema
Encyonema montanum
Encyonema silesiacum
Encyonema silesiacum var. elegans
Encyonema kamtschaticum var. parvum
Encyonema minutum var. pseudogracilis
Encyonema leibleinii
Encyonema nicafei
Encyonema sinicum
Encyonema reimeri
Encyonopsis
Encyonopsis alpina
Encyonopsis perborealis
Eolimna
Eolimna metafarta
Eolimna aboensis
Epithemia
Epithemia gibberula
Epithemia musculus
Epithemia alpestris
Epithemia gibba
Eucocconeis
Eucocconeis depressa
Eucocconeis flexella
Eunotia
Eunotia orthohedra
Eunotia exigua
Eunotia tecta
Eunotia bidentula
Eunotia mucophila
Eunotia triodon
Eunotia pseudoparallela
Eunotia tauntonensis
Fallacia
Fallacia californica
Fallacia tenera
Fallacia hummii
Fragilaria
Fragilaria cyclopum
Frustulia
Frustulia pseudomagaliesmontana
Geissleria
Geissleria declivis
Geissleria cascadensis
Geissleria punctifera
Genkalia
Genkalia digitulus
Gomphoneis
Gomphoneis herculeana
Gomphonella
Gomphonella hutchinsoniana
Gomphonella fogedii
Gomphonema
Gomphonema louisiananum
Gomphonema insularum
Gomphonema apuncto
Gomphonema brebissonii
Gomphonema eileencoxiae
Gomphonema elongatum
Gomphonema coronatum
Gomphonema semiapertum
Gomphonema vibrioides
Gomphosinica
Gomphosinica geitleri
Gomphosphenia
Gomphosphenia stoermeri
Grunowia
Grunowia solgensis
Grunowia tabellaria
Grunowia sinuata
Gyrosigma
Gyrosigma obscurum
Gyrosigma obtusatum
Halamphora
Halamphora subtilis
Halamphora latecostata
Hippodonta
Hippodonta gravistriata
Humidophila
Humidophila schmassmannii
Humidophila contenta
Humidophila perpusilla
Iconella
Iconella bifrons
Iconella guatimalensis
Krasskella
Krasskella kriegeriana
Lindavia
Lindavia affinis
Lindavia bodanica
Luticola
Luticola ventricosa
Luticola arctica
Luticola goeppertiana
Luticola hamiltonii
Mastogloia
Mastogloia taralunae
Mastogloia lacustris
Mayamaea
Mayamaea cahabaensis
Melosira
Melosira undulata
Nanofrustulum
Nanofrustulum cataractarum
Navicula
Navicula ingenua
Navicula goersii
Navicula vilaplanii
Navicula caterva
Navicula longicephala
Navicula antonii
Navicula canalis
Navicula veneta
Navicula cincta
Navicula seibigiana
Navicula symmetrica
Navicula libonensis
Navicula salinarum
Navicula erifuga
Navicula lundii
Navicula germainii
Navicula notha
Navicula subrhynchocephala
Navicula trivialis
Navicula reinhardtii
Navicula escambia
Navicula wildii
Navicula geronimensis
Navicula cari
Navicula rhynchocephala
Navicula cryptocephaloides
Navicula tripunctata
Navicula vaneei
Navicula whitefishensis
Navicula slesvicensis
Navicula angusta
Navicula viridula
Navicula peregrinopsis
Navicula hasta
Navicula sovereignii
Navicula vulpina
Navicula peregrina
Navicula aurora
Navicula oblonga
Navicula genovefae
GC
Navicula nunivakiana
GC
Navicymbula
Navicymbula pusilla
Neidiomorpha
Neidiomorpha binodiformis
Neidiopsis
Neidiopsis levanderi
Neidium
Neidium densestriatum
Neidium pseudodensestriatum
Neidium hercynicum
Neidium distinctepunctatum
Neidium bisulcatum
Neidium hitchcockii
Neidium sacoense
Neidium fossum
Neidium amphigomphus
Neidium dilatatum
Neidium iridis
Ninastrelnikovia
Ninastrelnikovia gibbosa
Nitzschia
Nitzschia acidoclinata
Nitzschia oligotraphenta
Nitzschia serpentiraphe
Nitzschia siliqua
GC
Nupela
Nupela neglecta
Nupela decipiens
Odontidium
Odontidium mesodon
Odontidium hyemale
Orthoseira
Orthoseira oregoniana
Peronia
Peronia fibula
Pinnularia
Pinnularia pluvianiformis
Pinnularia bigibba
Pinnularia saprophila
Pinnularia divergentissima
Pinnularia borealis
Pinnularia scotica
Pinnularia wisconsinensis
Pinnularia subgibba var. lanceolata
Pinnularia brauniana
Pinnularia feremorosa
Pinnularia subgibba var. sublinearis
Pinnularia polyonca var. stidolphii
Pinnularia subgibba var. undulata
Pinnularia undula
Pinnularia turgidula
Pinnularia decrescens
Pinnularia turfosiphila
Pinnularia lokana
Pinnularia cardinaliculus
Pinnularia macilenta
Pinnularia socialis
Pinnularia cuneicephala
Pinnularia kwacksii
Pinnularia undula var. major
Pinnularia clericii
Pinnularia formica
Pinnularia streptoraphe
Pinnularia rexlowei
Pinnularia bihastata
Pinnularia spinifera
Pinnularia transversa
Pinnularia pulchella var. canadensis
Pinnularia torta
Pinnularia pulchella
Pinnularia nobilis var. regularis
Pinnularia dariana
Pinnularia ectorii
Pinnularia alabamae
Pinnunavis
Pinnunavis elegans
Planothidium
Planothidium rostratoholarcticum
Planothidium reichardtii
Planothidium incuriatum
Planothidium biporomum
Planothidium sheathii
Planothidium lanceolatoides
Planothidium joursacense
GC
Platessa
Platessa kingstonii
Platessa stewartii
Pleurosigma
Pleurosigma delicatulum
Prestauroneis
Prestauroneis protracta
Proschkinia
Proschkinia browderiana
Psammothidium
Psammothidium rossii
Psammothidium subatomoides
Psammothidium sacculus
Psammothidium acidoclinatum
Psammothidium daonense
Psammothidium obliquum
Pseudostaurosira
Pseudostaurosira elliptica
Pseudostaurosira microstriata
Pulchellophycus
Pulchellophycus schwabei
Reimeria
Reimeria sinuata f. antiqua
Rossithidium
Rossithidium nodosum
Sellaphora
Sellaphora schadei
Sellaphora javanica
Sellaphora stroemii
Sellaphora subbacillum
Sellaphora disjuncta
Semiorbis
Semiorbis hemicyclus
Semiorbis eliasiae
Skabitschewskia
Skabitschewskia oestrupii
Skabitschewskia peragalloi
Stauroneis
Stauroneis thermicola
Stauroneis stodderi
Stauroneis staurolineata
Stauroneis alabamae
Stauroneis kingstonii
Stauroneis terryi
Staurophora
Staurophora tackei
Staurosira
Staurosira stevensonii
Staurosirella
Staurosirella berolinensis
Staurosirella martyi
Staurosirella neopinnata
Stephanodiscus
Stephanodiscus oregonicus
Stephanodiscus reimeri
Surirella
Surirella lacrimula
Surirella pinnata
Surirella internationalis
GC
Synedra
Synedra famelica
Tabularia
Tabularia fasciculata
Tetracyclus
Tetracyclus rupestris
Tetracyclus emarginatus
Thalassiosira
Thalassiosira lacustris
Tryblionella
Tryblionella lanceola
Tryblionella calida
Tryblionella brunoi
Tryblionella plana var. fennica
Tryblionella scalaris
Ulnaria
Ulnaria goulardii
Ulnaria contracta
Ulnaria acus
Ulnaria delicatissima
Ulnaria capitata