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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
Review Board
Taxon Contributors
Contact Us
What are diatoms?
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Species
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Planktonic
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
95
of 1105 species
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Genus Considered
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Acanthoceras
Acanthoceras zachariasii
Actinocyclus
Actinocyclus normanii
Asterionella
Asterionella formosa
Asterionella ralfsii var. americana
Aulacoseira
Aulacoseira granulata var. angustissima
Aulacoseira herzogii
Aulacoseira pusilla
Aulacoseira tenella
Aulacoseira humilis
Aulacoseira nivaloides
Aulacoseira nygaardii
Aulacoseira ambigua
Aulacoseira crassipunctata
Aulacoseira subarctica
Aulacoseira alpigena
Aulacoseira canadensis
Aulacoseira valida
Aulacoseira granulata
Aulacoseira nivalis
Aulacoseira islandica
Aulacoseira lirata
Aulacoseira italica
Aulacoseira muzzanensis
Bacillaria
Bacillaria paxillifera
Cavinula
Cavinula jaernefeltii
Cavinula cocconeiformis
Chaetoceros
Chaetoceros muelleri
Chaetoceros lauderi
Cyclostephanos
Cyclostephanos invisitatus
Cyclostephanos tholiformis
Cyclostephanos dubius
Cyclotella
Cyclotella atomus
Cyclotella distinguenda
Cyclotella kingstonii
Cyclotella quillensis
Diatoma
Diatoma tenuis
Diatoma ehrenbergii
Discostella
Discostella pseudostelligera
Discostella lacuskarluki
Discostella stelligera
Discostella asterocostata
Distrionella
Distrionella incognita
Eunotia
Eunotia zasuminensis
Fragilaria
Fragilaria cyclopum
Fragilaria crotonensis
Fragilaria tenera
Fragilariforma
Fragilariforma acidobiontica
Hannaea
Hannaea arcus
Hannaea superiorensis
Lindavia
Lindavia delicatula
Lindavia comensis
Lindavia michiganiana
Lindavia ocellata
Lindavia praetermissa
Lindavia rossii
Lindavia radiosa
Lindavia antiqua
Lindavia affinis
Lindavia intermedia
Lindavia bodanica
Lindavia eriensis
Melosira
Melosira varians
Pseudostaurosira
Pseudostaurosira brevistriata
Staurosira
Staurosira construens
Staurosira binodis
Staurosira construens var. venter
Staurosirella
Staurosirella pinnata
Staurosirella berolinensis
Staurosirella leptostauron
Staurosirella neopinnata
Staurosirella leptostauron var. dubia
Stephanocyclus
Stephanocyclus meneghinianus
Stephanodiscus
Stephanodiscus parvus
Stephanodiscus minutulus
Stephanodiscus binderanus
Stephanodiscus hantzschii f. tenuis
Stephanodiscus hantzschii
Stephanodiscus alpinus
Stephanodiscus medius
Stephanodiscus yellowstonensis
Stephanodiscus niagarae
Stephanodiscus reimeri
Tabellaria
Tabellaria fenestrata
Tabellaria flocculosa
Tabularia
Tabularia fasciculata
Terpsinoë
Terpsinoe musica
Thalassiosira
Thalassiosira minima
Thalassiosira weissflogii
Thalassiosira baltica
Thalassiosira lacustris
Ulnaria
Ulnaria contracta
Ulnaria acus
Ulnaria delicatissima
Ulnaria capitata
Urosolenia
Urosolenia eriensis