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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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You can also click on one of labeled areas on the map to browse by location.
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)

Biddulphia rhombus

Biddulphia rhombus

(Ehrenberg) Smith
Peragallo MM.H. et M. (1897 - 1908):"Diatoms of France (Atlas)", PL.XCVII, fig.7,8;
Zygoceros rhombus (Ehrenberg, 1839), Denticella rhombus (Ehrenberg, 1844), Odontella rhombus (Kutzing, 1849)
Ecological Preference:
Valves rhomboidal, with subconnical processes 95-150µm long apically and 35-150µm transapically. Valve surface convex with hexagonal reticulations 7-9 in 10µm. Areole on valve surface aranged radially.
  • Florida Bay Paleo Project

  • Sample localities:
  • Florida Bay