• 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
  • Epithemioid

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

Characteristics

  • Valves with bilateral symmetry (symmetric about a line)
  • Valves asymmetric to apical axis
  • Raphe system well developed and enclosed within a canal
  • Raphe system positioned near the valve margin

2 Genera

Epithemia Iconic 1

10Epithemia

Rhopalodia Iconic

0Rhopalodia

Rhopalodia Iconic

0Rhopalodia

Epithemia Iconic 1

10Epithemia

16Epithemia
9Rhopalodia
9Rhopalodia
16Epithemia

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. doi:10.1080/0269249X.2021.2006790

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