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Diatom Image Database

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)

Ardissonia formosa

Ardissonia formosa

Ardissonia formosa


Authority:
Hantzsch in Rabenhorst
Year:
1863
References:
Jensen, N.G.: F. Hustedt. The Pennate Diatoms. A translation of Hustedt's "Die Kieselalgen, 2. Teil", pg.215, fig.720;
Synonyms:
Ardissonia formosa (Grunow, 1880)
Ecological Preference:
Marine
Description:
Valves linear, somewhat retracted in the middle, narrower near the ends, with blountly rounded ends, 200-450µm long, 15-23µm broad. Transapical striae robust, parallel throughout the valve 9-11 in 10µm, crossed by two longitudinal ribs present on each side of the median line. Cell walls are distinctly chambered, the inner rows of chambers are crossed by the two rows of pearl-like puncta on both side of the median line, which are distinct under LM.
Projects:
  • Florida Bay Paleo Project
  • Biscayne Bay Paleo Project


    • Sample localities:
  • Biscayne Bay (BISC)