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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
About Us
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What are diatoms?
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Species
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1001-10000
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
399
of 1105 species
GC
Genus Considered
Waterbody
All
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Marine
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Acanthoceras
Acanthoceras zachariasii
Achnanthes
Achnanthes tumescens
Achnanthes undulorostrata
Achnanthes felinophila
Achnanthes longboardia
Achnanthes inflata
Achnanthes coarctata
Actinella
Actinella punctata
Actinocyclus
Actinocyclus normanii
Amphipleura
Amphipleura pellucida
Amphora
Amphora copulata
Amphora calumetica
Amphora ovalis
Aneumastus
Aneumastus pseudotusculus
Aneumastus rostratus
Aneumastus tusculus
Anomoeoneis
Anomoeoneis fogedii
Anomoeoneis sphaerophora f. rostrata
Anomoeoneis sphaerophora
Asterionella
Asterionella ralfsii var. americana
Aulacoseira
Aulacoseira valida
Aulacoseira italica
Aulacoseira muzzanensis
Biremis
Biremis undulata
Brachysira
Brachysira arctoborealis
Brachysira neoacuta
Brachysira hannae
Brachysira serians
Caloneis
Caloneis silicula
Cavinula
Cavinula scutelloides
Cavinula davisiae
Cavinula scutiformis
Cavinula maculata
Chaetoceros
Chaetoceros muelleri
Chaetoceros lauderi
Cocconeis
Cocconeis fluviatilis
Cocconeis klamathensis
Cocconeis placentula
Cosmioneis
Cosmioneis citriformis
Cosmioneis hawaiiensis
Cosmioneis reimeri
Craticula
Craticula accomoda
Craticula accomodiformis
Craticula riparia
Craticula buderi
Craticula halophila
Craticula ambigua
Craticula johnstoniae
Craticula sardiniana
Craticula cuspidata
Ctenophora
Ctenophora pulchella
Cyclotella
Cyclotella quillensis
Cymbella
Cymbella affinis
Cymbella tropica
Cymbella cleve-eulerae
Cymbella turgidula
Cymbella hantzschiana
Cymbella rumrichiae
Cymbella subturgidula
Cymbella vulgata
Cymbella stigmaphora
Cymbella maggiana
Cymbella compacta
Cymbella neocistula
Cymbella fontinalis
Cymbopleura
Cymbopleura angustata
Cymbopleura fluminea
Cymbopleura lapponica
Cymbopleura hybrida
Cymbopleura elliptica
Cymbopleura sublanceolata
Cymbopleura anglica
Cymbopleura laszlorum
Cymbopleura incertiformis var. linearis
Cymbopleura incerta
Cymbopleura incertiformis
Cymbopleura florentina
Cymbopleura stauroneiformis
Cymbopleura rainierensis
Cymbopleura tynnii
Cymbopleura edlundii
Cymbopleura lata
Cymbopleura perprocera
Delicatophycus
Delicatophycus montana
Delicatophycus alpestris
Diatoma
Diatoma vulgaris
Diatoma ehrenbergii
Diatomella
Diatomella balfouriana
Diploneis
Diploneis potapovae
Diploneis calcicolafrequens
Diploneis parma
Diploneis galloprovincialis
Diploneis doncharlesii
Diploneis krammeri
Diploneis ovalis
Discostella
Discostella asterocostata
Encyonema
Encyonema auerswaldii
Encyonema procerum
Encyonema paucistriatum
Encyonema lunatum
Encyonema pergracile
Encyonema silesiacum
Encyonema silesiacum var. elegans
Encyonema kamtschaticum var. parvum
Encyonema sibericum
Encyonema minutum var. pseudogracilis
Encyonema hebridicum
Encyonema triangulum
Encyonopsis
Encyonopsis descripta
Encyonopsis dakotae
Encyonopsis descriptiformis
Encyonopsis lacuscaerulei
Encyonopsis montana
Entomoneis
Entomoneis punctulata
Entomoneis paludosa
Entomoneis ornata
Entomoneis alata
Envekadea
Envekadea metzeltinii
Epithemia
Epithemia sorex
Epithemia reicheltii
Epithemia musculus
Epithemia adnata
Epithemia argus
Epithemia smithii
Epithemia turgida
Epithemia gibba
Eucocconeis
Eucocconeis flexella
Eunotia
Eunotia subherkiniensis
Eunotia gibbosa
Eunotia sudetica
Eunotia boomsma
Eunotia hexaglyphis
Eunotia bilii
Eunotia incisa
Eunotia tetraodon
Eunotia obliquestriata
Eunotia faba
Eunotia areniverma
Eunotia montuosa
Eunotia richbuttensis
Eunotia bidens
Eunotia zasuminensis
Eunotia mydohaimasiae
Eunotia diadema
Eunotia sarraceniae
Eunotia charliereimeri
Eunotia macroglossa
Eunotia lewisii
Eunotia serra
Eunotia naegelii
Eunotia spatulata
Eunotia tauntonensis
Eunotia eruca
GC
Fragilariforma
Fragilariforma polygonata
Fragilariforma constricta
Fragilariforma bicapitata
Fragilariforma nitzschioides
Fragilariforma acidobiontica
Frustulia
Frustulia neomundana
Frustulia crassinervia
Frustulia latita
Frustulia asiatica
Frustulia soror
Frustulia amosseana
Frustulia quadrisinuata
Frustulia inculta
Frustulia saxonica
Frustulia amphipleuroides
Frustulia rexii
Frustulia krammeri
Gomphoneis
Gomphoneis eriense var. variabilis
Gomphoneis eriensis var. apiculata
Gomphoneis eriensis
Gomphoneis eriensis var. angularis
Gomphoneis trullata
Gomphoneis septa
Gomphoneis oreophila
Gomphoneis minuta
Gomphoneis herculeana var. lowei
Gomphoneis herculeana var. abundans
Gomphoneis herculeana
Gomphoneis mammilla
Gomphonema
Gomphonema submehleri
Gomphonema sarcophagus
Gomphonema louisiananum
Gomphonema manubrium
Gomphonema insularum
Gomphonema distans
Gomphonema ventricosum
Gomphonema brebissonii
Gomphonema turgidum
Gomphonema nathorstii
Gomphonema johnsonii
Gomphonema apicatum
Gomphonema freesei
Gomphonema americobtusatum
Gomphonema mexicanum
Gomphonema sphaerophorum
Gomphonema pusillum
Gomphonema christensenii
Gomphonema mehleri
Gomphonema amerhombicum
Gomphonema truncatum
Gomphonema reimeri
Gomphonema acuminatum
Gomphonema eileencoxiae
Gomphonema elongatum
Gomphonema coronatum
Gomphonema vibrioides
Gomphosphenia
Gomphosphenia lingulatiformis
Gomphosphenia grovei
Gyrosigma
Gyrosigma acuminatum
Halamphora
Halamphora coffeiformis
Hantzschia
Hantzschia amphioxys
Kobayasiella
Kobayasiella madumensis
Kurtkrammeria
Kurtkrammeria stodderi
Kurtkrammeria weilandii
Kurtkrammeria subspicula
Kurtkrammeria lacusglacialis
Kurtkrammeria treinishii
Lindavia
Lindavia affinis
Lindavia intermedia
Luticola
Luticola stigma
Luticola minor
Mastogloia
Mastogloia taralunae
Mastogloia grevillei
Mastogloia lucayensis
Mastogloia albertii
Mastogloia pumila
Mastogloia lacustris
Mastogloia elliptica
Mastogloia floridensis
Meridion
Meridion lineare
Meridion circulare var. constrictum
Meridion alansmithii
Muelleria
Muelleria tetonensis
Muelleria agnellus
Muelleria spauldingiae
Navicula
Navicula symmetrica
Navicula caroliniae
Navicula oppugnata
Navicula rostellata
Navicula reinhardtii
Navicula escambia
Navicula schweigeri
Navicula wildii
Navicula cari
Navicula winona
Navicula rhynchocephala
Navicula cryptocephaloides
Navicula rhynchotella
Navicula subconcentrica
Navicula weberi
Navicula pseudolanceolata
Navicula lanceolata
Navicula streckerae
Navicula tripunctata
Navicula vaneei
Navicula whitefishensis
Navicula harmoniae
Navicula margalithii
Navicula viridulacalcis subsp. neomundana
Navicula slesvicensis
Navicula venerablis
Navicula viridula
Navicula peregrinopsis
Navicula flatheadensis
Navicula piercei
Navicula hasta
Navicula sovereignii
Navicula vulpina
Navicula galloae
Navicula peregrina
Navicula ludloviana
Neidiopsis
Neidiopsis weilandii
Neidium
Neidium densestriatum
Neidium pseudodensestriatum
Neidium fogedii
Neidium distinctepunctatum
Neidium bobmarshallense
Neidium hitchcockii
Neidium fossum
Nitzschia
Nitzschia brevissima
Nitzschia biacrula
Nitzschia columbiana
Nitzschia angustata
Nitzschia regula var. robusta
Nitzschia serpentiraphe
Nitzschia linearis
Nitzschia sigma
Odontidium
Odontidium mesodon
Orthoseira
Orthoseira oregoniana
Pinnularia
Pinnularia pluvianiformis
Pinnularia bigibba
Pinnularia subanglica
Pinnularia gibbiformis
Pinnularia subcapitata var. elongata
Pinnularia brebissonii
Pinnularia nodosa
Pinnularia nodosa var. percapitata
Pinnularia rabenhorstii
Pinnularia scotica
Pinnularia wisconsinensis
Pinnularia subgibba var. lanceolata
Pinnularia brauniana
Pinnularia rhombarea
Pinnularia suchlandtii
Pinnularia feremorosa
Pinnularia lailaensis
Pinnularia subgibba var. sublinearis
Pinnularia polyonca var. stidolphii
Pinnularia microstauron
Pinnularia acrosphaeria
Pinnularia subgibba var. undulata
Pinnularia undula
Pinnularia parvulissima
Pinnularia turgidula
Pinnularia decrescens
Pinnularia lokana
Pinnularia cardinaliculus
Pinnularia macilenta
Pinnularia lata
Pinnularia undula var. major
Pinnularia subgibba
Pinnunavis
Pinnunavis elegans
Placoneis
Placoneis explanata
Placoneis abiskoensis
Placoneis gastrum
Plagiotropis
Plagiotropis lepidoptera var. proboscidea
Pleurosigma
Pleurosigma inflatum
Pleurosigma delicatulum
Prestauroneis
Prestauroneis integra
Psammothidium
Psammothidium obliquum
Pseudostaurosira
Pseudostaurosira americana
Rexlowea
Rexlowea navicularis
Rhoicosphenia
Rhoicosphenia abbreviata
Rhoicosphenia stoermeri
Scoliopleura
Scoliopleura peisonis
Sellaphora
Sellaphora meridionalis
Sellaphora auldreekie
Sellaphora bacilloides
Sellaphora bacillum
Sellaphora alastos
Sellaphora americana
Seminavis
Seminavis eulensteinii
Semiorbis
Semiorbis catillifera
Semiorbis rotundus
Stauroneis
Stauroneis lauenburgiana
Stauroneis boyntoniae
Stauroneis reichardtii
Stauroneis acidoclinatopsis
Stauroneis pikuni
Stauroneis schroederi
Stauroneis siberica
Stauroneis acidoclinata
Stauroneis ancepsfallax
Stauroneis vandevijveri
Stauroneis absaroka
Stauroneis anceps
Stauroneis sacajaweae
Stauroneis amphicephala
Stauroneis pax
Stauroneis stodderi
Stauroneis angustilancea
Stauroneis staurolineata
Stauroneis gracilis
Stauroneis beeskovea
Stauroneis baconiana
Stauroneis akamina
Stauroneis subborealis
Stauroneis superkuelbsii
Staurophora
Staurophora wislouchii
Staurophora brantii
Staurophora columbiana
Staurophora amphioxys
Stephanocyclus
Stephanocyclus gamma
Stephanodiscus
Stephanodiscus yellowstonensis
Stephanodiscus niagarae
Surirella
Surirella lacrimula
Surirella amphioxys
Surirella iowensis
Surirella arctica
Surirella brebissonii
Surirella angusta
Surirella pinnata
Surirella ovalis
Surirella crumena
Synedra
Synedra mazamaensis
Tetracyclus
Tetracyclus hinziae
Tetracyclus emarginatus
Tryblionella
Tryblionella granulata
Tryblionella apiculata
Tryblionella calida
Tryblionella hungarica
Tryblionella brunoi
Ulnaria
Ulnaria goulardii
Ulnaria acus
Ulnaria capitata
Urosolenia
Urosolenia eriensis