• Home
  • Practitioners
  • Morphology
    • All Morphological Groups
    • Centric
    • Araphid
    • Eunotioid
    • Symmetric Biraphid
    • Monoraphid
    • Asymmetric Biraphid
    • Epithemioid
    • Nitzschioid
    • Surirelloid
  • Genera
  • Species
  • Glossary
  • About Us
    • About
    • News
    • Projects
    • Review Board
    • Taxon Contributors
    • Contact Us
  • What are diatoms?
Diatoms of North AmericaDiatoms of North America
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?
Diatoms of North America
Morphological Category
  • Centric

    • Centric
    • Araphid
    • Eunotioid
    • Symmetric Biraphid
    • Monoraphid
    • Asymmetric Biraphid
    • Epithemioid
    • Nitzschioid
    • Surirelloid

Characteristics

  • Valves with radial symmetry (symmetric about a point)
  • Cells lack a raphe system and lack significant motility
  • Cells may possess fultoportulae (strutted processes) and rimoportulae (labiate processes)
  • Sexual reproduction is oogamous

31 Genera

Acanthoceras

1Acanthoceras

Actinocyclus Iconic

1Actinocyclus

Aulacoseira Iconic

21Aulacoseira

Bacteriastrum iconic

0Bacteriastrum

Brevisira Iconic

0Brevisira

Chaetoceros new iconic

2Chaetoceros

Coscinodiscus iconic

0Coscinodiscus

Cyclostephanos Iconic

3Cyclostephanos

Cyclotella Iconic

3Cyclotella

Discostella Iconic

4Discostella

Ellerbeckia Iconic

1Ellerbeckia

Eupodiscus Iconic

1Eupodiscus

Guinardia iconic

0Guinardia

Hydrosera Iconic

1Hydrosera

Lindavia Iconic

12Lindavia

Melosira Iconic

4Melosira

Minidiscus iconic

0Minidiscus

Orthoseira Iconic

2Orthoseira

Pleurosira Iconic

1Pleurosira

Pliocaenicus Iconic

0Pliocaenicus

Puncticulata Iconic

0Puncticulata

Skeletonema Iconic

0Skeletonema

Spicaticribra Iconic

0Spicaticribra

Stephanocyclus iconic2

3Stephanocyclus

Stephanodiscus Iconic

11Stephanodiscus

Strelnikoviella Iconic

0Strelnikoviella

Terpsinoe Iconic

1Terpsinoƫ

Thalassiosira Iconic

4Thalassiosira

Tieres iconic

0Trieres

Urosolenia Iconic

1Urosolenia

Zygoceros iconic

0Zygoceros

Diatoms of North America

The source for diatom identification and ecology

Cite as: Spaulding et al. 2021. Diatoms.org: supporting taxonomists, connecting communities. Diatom Research 36(4): 291-304. https://doi.org/10.1080/0269249X.2021.2006790

  • Home
  • What are Diatoms?
  • About Us
  • Contact Us
  • Practitioners
  • Morphology
  • Genera
  • Species
  • Glossary
Privacy Policy