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Welcome to the Diatom Image Database! The Periphyton Group at Florida International University created and maintains the Diatom Image Database, which includes over 980 diatom taxa found in the greater Everglades region of south Florida. Please send questions or comments about the Diatom Image Database to Franco Tobias .

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Map of south Florida Loxahatchee (LOX) WCA 2A WCA 3A Biscayne Bay Shark River Slough (SRS) Taylor Slough (TS) Florida Bay Everglades National Park (ENP) Everglades National Park (ENP)

Actinoptychus senarius

Actinoptychus senarius

Actinoptychus senarius

(Ehrenberg) Ehrenberg
Witkowski et al. (2000). Iconographia Diatomologica (Vol.VII). Diatom flora of marine coast. Part 1. pg.22, Pl. 3:3,4;
Actinoptychus undulatus (Bailey) Ralfs in Pritchard, 1861)
Ecological Preference:
Valve divided into sectors, alternaly elevated or depressed , which terminate shortly from the middle forming a structureless central area, hexagonal in outline central area, each of the elevated sectors possesses a labiate process with external tube. Areolation coarse and irregular, 4-10 in 10µm.
  • Southeast Florida Coastal Mangroves
  • Florida Bay Paleo Project
  • Biscayne Bay Paleo Project

  • Sample localities:
  • Biscayne Bay (BISC)