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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)

Amphora coffeaeformis var. borealis


Authority:
(Kutzing, 1844) Cleve
Year:
1895
References:
Gasse, F. (1986). East African diatoms. Taxonomy, ecological distribution), Bibiotheca Diatomologica, Band 11, pg. 22, Figs 24, 25;
Synonyms:
Amphora borealis (Kutzing, 1844), Amphora salina var. minor (Van Heurck, 1880-1885)
Ecological Preference:
Brackish-Marine
Description:
Valves semi-lanceolate with protracted subrostrate to subcapitate apice, 21-24µm long, 5-7µm broad. Dorsal margin convex, ventral margin slightly concave. Raphe straight, external central endings delicately bent towards the dorsal side, axial area narrow, central area rectangular, appiring only on the ventral side. Dorsal striae parallel in the middle, becoming radiate towards the ends, 21-25 in 10µm, about 36 in 10µm on the ventral side.
Notes:
Collected from coastal mangroves near Biscayne Bay, from sites with salinity 20 -25ppt and water depth < 0.3m.
Projects:
  • Southeast Florida Coastal Mangroves


    • Sample localities:
  • Coastal Mangroves