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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)

Staurosirella pinnata pinnata

Staurosirella pinnata pinnata

(Ehrenberg) Williams & Round
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. 156-157; 496-497 [t.133:9-11]
Odontidium mutabile W. Smith 1856; (?)Fragilaria mutabilis var. subsolitaris Grunow 1862; Fragilaria pinnata var. lancettula (Schumann 1867) Hustedt in A. Schmidt et al. 1913 (ob incl. holotype?); Fragilaria elliptica Schumann 1867 sensu auct. nonnull. (ob incl. holotype?); Fragilaria pinnata var. subrotunda Mayer 1937; Odontidium martyi var. polymorpha (Jouravleva) Proschkina- Lavrenko 1950
Valve is variable, may be elliptic, elliptic-lanceolate, linear with a weak middle swelling, rarely slightly rhombic, round, oval or club-shaped; axial area is narrow, striae are parallel or slightly radiate; length and breadth is as in the nominate; striae count is ~8-12 in 10µm
  • Transect Project

  • Sample localities:
  • Shark River Slough (SRS)