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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)

Eunotia formica

Eunotia formica

Krammer, K. and Lange-Bertalot, H. (1991). Baccilariophyceae: Centrales, Fragilariaceae, Eunotiaceae. in: Süßwasserflora von Mitteleuropa (H. Ettl, J. Gerloff, H. Heynig & D. Mollenhauer, eds), 2(3), pp. 209; 534-535 (pl.152:8-12)
basionym Eunotia formica var. elongata Grun. 1865 in Rabenhorst, Beitrage (Leipzig) for Eunotia elongata Grun. nov. stat., synonym is Eunotia didyma var. claviculata (Grun.) Hustedt 1913 in A. Schmidt Atlas
Ventral side of valve slightly concave, with bulging portion in the middle; punctate striae more or less parallel; ends are bluntly rounded to slightly capitate, somewhat reflexed; distal raphe endings are on terminal valve ends; length is (12)35-200(230)µm, breadth is 7-14µm; striae count is 6-12 in 10µm (24 punctae in 10µm)
  • Transect Project

  • Sample localities:
  • Shark River Slough (SRS)