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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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Western rivers 2004
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
338
of 1105 species
GC
Genus Considered
Waterbody
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Inland
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Achnanthidium
Achnanthidium subhudsonis var. kraeuselii
Achnanthidium minutissimum
Achnanthidium rivulare
Achnanthidium deflexum
Actinocyclus
Actinocyclus normanii
Adlafia
Adlafia suchlandtii
Amphipleura
Amphipleura pellucida
Amphora
Amphora pediculus
Amphora copulata
Amphora ovalis
Asterionella
Asterionella formosa
Aulacoseira
Aulacoseira granulata var. angustissima
Aulacoseira ambigua
Aulacoseira crassipunctata
Aulacoseira alpigena
Aulacoseira valida
Aulacoseira granulata
Aulacoseira lirata
Aulacoseira italica
Aulacoseira muzzanensis
Bacillaria
Bacillaria paxillifera
Biremis
Biremis circumtexta
Brachysira
Brachysira vitrea
Brachysira brebissonii
Caloneis
Caloneis bacillum
Caloneis silicula
Caloneis amphisbaena
Cavinula
Cavinula jaernefeltii
Cavinula cocconeiformis
Chamaepinnularia
Chamaepinnularia soehrensis
Chamaepinnularia mediocris
Cocconeis
Cocconeis neodiminuta
Cocconeis fluviatilis
Cocconeis pediculus
Cocconeis placentula
Craticula
Craticula subminuscula
Craticula molestiformis
Craticula citrus
Craticula accomoda
Craticula halophila
Craticula cuspidata
Ctenophora
Ctenophora pulchella
Cyclostephanos
Cyclostephanos invisitatus
Cyclotella
Cyclotella atomus
Cylindrotheca
Cylindrotheca gracilis
Cymbella
Cymbella excisiformis
Cymbella laevis
Cymbella affinis
Cymbella hustedtii
Cymbella tumida
Cymbella proxima
Cymbella cymbiformis
Cymbella mexicana
Cymbella lanceolata
Cymbellonitzschia
Cymbellonitzschia diluviana
Cymbopleura
Cymbopleura amphicephala
Cymbopleura naviculiformis
Cymbopleura subaequalis
Cymbopleura elliptica
Decussata
Decussata placenta
Denticula
Denticula tenuis
Denticula subtilis
Denticula kuetzingii
Diadesmis
Diadesmis confervacea
Diatoma
Diatoma moniliformis
Diatoma vulgaris
Diatoma tenuis
Diatomella
Diatomella balfouriana
Didymosphenia
Didymosphenia geminata
Diploneis
Diploneis puella
Diploneis ovalis
Diploneis elliptica
Diploneis finnica
Discostella
Discostella pseudostelligera
Discostella stelligera
Ellerbeckia
Ellerbeckia arenaria
Encyonema
Encyonema reichardtii
Encyonema minutum
Encyonema leibleinii
Encyonema triangulum
Encyonopsis
Encyonopsis alpina
Encyonopsis subminuta
Encyonopsis microcephala
Encyonopsis krammeri
Encyonopsis falaisensis
Encyonopsis cesatii
Entomoneis
Entomoneis alata
Epithemia
Epithemia sorex
Epithemia reicheltii
Epithemia gibberula
Epithemia musculus
Epithemia adnata
Epithemia argus
Epithemia turgida
Epithemia gibba
Eucocconeis
Eucocconeis laevis
Eucocconeis flexella
Eunotia
Eunotia microcephala
Eunotia exigua
Eunotia tenella
Eunotia sudetica
Eunotia paludosa
Eunotia incisa
Eunotia mucophila
Eunotia faba
Eunotia pectinalis
Eunotia bilunaris
Eunotia formica
Fallacia
Fallacia tenera
Fallacia subhamulata
Fallacia pygmaea
Fragilaria
Fragilaria vaucheriae
Fragilaria mesolepta
Fragilaria crotonensis
Fragilaria tenera
Fragilariforma
Fragilariforma bicapitata
Frustulia
Frustulia crassinervia
Frustulia vulgaris
Frustulia saxonica
Frustulia amphipleuroides
Geissleria
Geissleria acceptata
Geissleria decussis
Gogorevia
Gogorevia exilis
Gomphoneis
Gomphoneis eriense var. variabilis
Gomphoneis eriense
Gomphoneis minuta
Gomphoneis herculeana
Gomphonella
Gomphonella olivacea
Gomphonema
Gomphonema lagenula
Gomphonema kobayasii
Gomphonema sarcophagus
Gomphonema pygmaeum
Gomphonema stoermeri
Gomphonema ventricosum
Gomphonema brebissonii
Gomphonema americobtusatum
Gomphonema mexicanum
Gomphonema truncatum
Gomphonema acuminatum
Gomphonema elongatum
Gomphonema coronatum
Gomphosinica
Gomphosinica geitleri
Gomphosphenia
Gomphosphenia lingulatiformis
Gomphosphenia grovei
Grunowia
Grunowia tabellaria
Gyrosigma
Gyrosigma acuminatum
Gyrosigma attenuatum
Halamphora
Halamphora montana
Halamphora normanii
Halamphora veneta
Hannaea
Hannaea arcus
Hantzschia
Hantzschia amphioxys
Hippodonta
Hippodonta hungarica
Hippodonta capitata
Humidophila
Humidophila schmassmannii
Humidophila contenta
Humidophila perpusilla
Iconella
Iconella hibernica
Karayevia
Karayevia amoena
Karayevia nitidiformis
Karayevia suchlandtii
Karayevia laterostrata
Karayevia clevei
Lemnicola
Lemnicola hungarica
Lindavia
Lindavia ocellata
Lindavia rossii
Lindavia affinis
Luticola
Luticola goeppertiana
Mastogloia
Mastogloia pseudosmithii
Mastogloia lacustris
Mastogloia elliptica
Melosira
Melosira varians
Meridion
Meridion circulare var. constrictum
Meridion anceps
Meridion circulare
Navicula
Navicula vilaplanii
Navicula kotschyi
Navicula caterva
Navicula metareichardtiana
Navicula antonii
Navicula canalis
Navicula veneta
Navicula cincta
Navicula cryptofallax
Navicula cryptocephala
Navicula symmetrica
Navicula gregaria
Navicula libonensis
Navicula salinarum
Navicula erifuga
Navicula capitatoradiata
Navicula lundii
Navicula germainii
Navicula leptostriata
Navicula notha
Navicula oppugnata
Navicula rostellata
Navicula recens
Navicula subrhynchocephala
Navicula trivialis
Navicula wildii
Navicula cari
Navicula rhynchocephala
Navicula lanceolata
Navicula tripunctata
Navicula margalithii
Navicula slesvicensis
Navicula angusta
Navicula viridula
Navicula radiosa
Navicula peregrina
Navicula aurora
Navicula oblonga
Navicymbula
Navicymbula pusilla
Neidiomorpha
Neidiomorpha binodiformis
Neidium
Neidium bisulcatum
Ninastrelnikovia
Ninastrelnikovia gibbosa
Nitzschia
Nitzschia inconspicua
Nitzschia microcephala
Nitzschia soratensis
Nitzschia perminuta
Nitzschia alpina
Nitzschia liebethruthii
Nitzschia desertorum
Nitzschia valdecostata
Nitzschia palea var. debilis
Nitzschia acidoclinata
Nitzschia palea var. tenuirostris
Nitzschia amphibia
Nitzschia communis
Nitzschia palea
Nitzschia incognita
Nitzschia sociabilis
Nitzschia paleacea
Nitzschia fonticola
Nitzschia dissipata
Nitzschia reversa
Nitzschia recta
Nitzschia angustata
Nitzschia acicularis
Nitzschia filiformis
Nitzschia linearis
Nitzschia sigma
Nitzschia sigmoidea
Nitzschia siliqua
GC
Nupela
Nupela lapidosa
Odontidium
Odontidium mesodon
Odontidium hyemale
Orthoseira
Orthoseira roeseana
Pinnularia
Pinnularia divergentissima
Pinnularia borealis
Pinnularia brebissonii
Pinnularia nodosa
Pinnularia microstauron
Pinnularia lata
Placoneis
Placoneis abiskoensis
Placoneis gastrum
Plagiotropis
Plagiotropis lepidoptera var. proboscidea
Planothidium
Planothidium frequentissimum
Planothidium potapovae
Planothidium delicatulum
Planothidium reichardtii
Planothidium lanceolatum
Planothidium amphibium
Planothidium biporomum
Platessa
Platessa conspicua
Platessa oblongella
Pleurosira
Pleurosira laevis
Prestauroneis
Prestauroneis protracta
Psammothidium
Psammothidium microscopicum
Psammothidium didymum
Psammothidium rossii
Psammothidium subatomoides
Psammothidium acidoclinatum
Psammothidium chlidanos
Psammothidium daonense
Psammothidium bioretii
Psammothidium helveticum
Pseudofallacia
Pseudofallacia monoculata
Pseudostaurosira
Pseudostaurosira elliptica
Pseudostaurosira pseudoconstruens
Pseudostaurosira robusta
Pseudostaurosira parasitica
Pseudostaurosira brevistriata
Reimeria
Reimeria sinuata
Rhoicosphenia
Rhoicosphenia abbreviata
Rossithidium
Rossithidium nodosum
Rossithidium pusillum
Rossithidium petersenii
Rossithidium kriegeri
Sellaphora
Sellaphora schadei
Sellaphora stroemii
Sellaphora disjuncta
Sellaphora bacillum
Sellaphora laevissima
Simonsenia
Simonsenia delognei
Skabitschewskia
Skabitschewskia oestrupii
Skabitschewskia peragalloi
Stauroforma
Stauroforma exiguiformis
Stauroneis
Stauroneis thermicola
Stauroneis kriegeri
Stauroneis smithii
Stauroneis smithii var. incisa
Stauroneis anceps
Stauroneis phoenicenteron
Staurophora
Staurophora tackei
Staurosira
Staurosira construens
Staurosira binodis
Staurosira construens var. venter
Staurosirella
Staurosirella pinnata
Staurosirella martyi
Staurosirella leptostauron
Staurosirella leptostauron var. dubia
Stephanocyclus
Stephanocyclus meneghinianus
Stephanodiscus
Stephanodiscus parvus
Stephanodiscus minutulus
Stephanodiscus hantzschii
Stephanodiscus medius
Surirella
Surirella brebissonii
Surirella angusta
Surirella pinnata
Surirella ovalis
Surirella librile
Synedra
Synedra mazamaensis
Synedra famelica
Tabellaria
Tabellaria fenestrata
Tabellaria flocculosa
Tabularia
Tabularia fasciculata
Tetracyclus
Tetracyclus glans
Thalassiosira
Thalassiosira weissflogii
Tryblionella
Tryblionella apiculata
Tryblionella calida
Tryblionella hungarica
Tryblionella scalaris
Ulnaria
Ulnaria goulardii
Ulnaria contracta
Ulnaria acus
Ulnaria delicatissima