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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)

Caloneis schumanniana

(Grunow) Cleve
Krammer K. & Lange-Bertalot H. (1991): "Susswaserflora von Mitteleuropa", Vol.1, pg. 387, 388, Taf.171:1-11;
Navicula schumanniana (Grunow, 1880), Navicula trochus (sensu Schumann, 1863, non Ehrenberg 1838), Caloneis limosa (sensu Patrick in Patrick & Reimer, 1966)
Ecological Preference:
Valves linear-elliptical with broadly rounded apices, 20-50µm long, 8-14µm broad. Raphe straight, axial area narrow-lanceolate, widened around the central nodule into a large elliptical central area, lunar-crescent-shaped markings in which the striae continue present on both sides of the raphe. Transapical striae slightly radiate, 17-20 in 10µm, often interrupted in the middle, crossed by longitudinal lines on both sides.
Located: PFB582, loc. 41 x 102.8
  • Southeast Florida Coastal Mangroves
  • Florida Bay Paleo Project

  • Sample localities:
  • Florida Bay