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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
News
Projects
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Taxon Contributors
Contact Us
What are diatoms?
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Species
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Vertical
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
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Displaying
110
of 1103 species
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Genus Considered
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Achnanthes
Achnanthes coarctata
Brebissonia
Brebissonia lanceolata
Cymbella
Cymbella cosleyi
Cymbella excisiformis
Cymbella laevis
Cymbella affiniformis
Cymbella affinis
Cymbella subleptoceros
Cymbella parva
Cymbella tropica
Cymbella hustedtii
Cymbella neoleptoceros
Cymbella cleve-eulerae
Cymbella turgidula
Cymbella hantzschiana
Cymbella blinnii
Cymbella rumrichae
Cymbella subturgidula
Cymbella vulgata
Cymbella stigmaphora
Cymbella alpestris
Cymbella tumida
Cymbella proxima fo. gravida
Cymbella maggiana
Cymbella compacta
Cymbella neocistula
Cymbella mexicana var. kamtschatica
Cymbella proxima
Cymbella neocistula var. islandica
Cymbella cymbiformis
Cymbella amplificata
Cymbella perfossilis
Cymbella mexicana
Cymbella aspera
Cymbella lanceolata
Cymbella janischii
Didymosphenia
Didymosphenia geminata
Fragilaria
Fragilaria vaucheriae
Fragilaria cyclopum
Gomphoneis
Gomphoneis eriense var. variabilis
Gomphoneis eriense var. apiculata
Gomphoneis eriense
Gomphoneis eriense var. angularis
Gomphoneis trullata
Gomphoneis septa
Gomphoneis oreophila
Gomphoneis minuta
Gomphoneis herculeana var. lowei
Gomphoneis herculeana var. abundans
Gomphoneis herculeana
Gomphoneis mammilla
Gomphonella
Gomphonella hutchinsoniana
Gomphonella pseudookunoi
Gomphonella fogedii
Gomphonella olivacea
Gomphonema
Gomphonema consector
Gomphonema variostriatum
Gomphonema lagenula
Gomphonema incognitum
Gomphonema kobayasii
Gomphonema sierranum
Gomphonema caperatum
Gomphonema duplipunctatum
Gomphonema submehleri
Gomphonema louisiananum
Gomphonema manubrium
Gomphonema insularum
Gomphonema germainii
Gomphonema stoermeri
Gomphonema distans
Gomphonema ventricosum
Gomphonema brebissonii
Gomphonema turgidum
Gomphonema nathorstii
Gomphonema johnsonii
Gomphonema pseudosphaerophorum
Gomphonema apicatum
Gomphonema freesei
Gomphonema mexicanum
Gomphonema sphaerophorum
Gomphonema pusillum
Gomphonema christenseni
Gomphonema mehleri
Gomphonema amerhombicum
Gomphonema truncatum
Gomphonema californicum
Gomphonema reimeri
Gomphonema acuminatum
Gomphonema eileencoxiae
Gomphonema elongatum
Gomphonema coronatum
Gomphonema semiapertum
Gomphonema vibrioides
Gomphosinica
Gomphosinica geitleri
Gomphosphenia
Gomphosphenia grovei
Hannaea
Hannaea superiorensis
Melosira
Melosira undulata
Meridion
Meridion circulare var. constrictum
Meridion circulare
Pseudostaurosira
Pseudostaurosira elliptica
Pseudostaurosira parasitica
Pseudostaurosira brevistriata
Rhoicosphenia
Rhoicosphenia californica
Rhoicosphenia abbreviata
Rhoicosphenia stoermeri
Staurosira
Staurosira construens
Staurosira binodis
Staurosirella
Staurosirella pinnata
Staurosirella martyi
Ulnaria
Ulnaria capitata