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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)

Fragilaria ulna amphirhynchus

Fragilaria ulna amphirhynchus


Authority:
(Ehrenberg) Grunow
Year:
1862
References:
Patrick, R. & Reimer, C. W (1966). The Diatoms of the United States I. Monographs of the Academy of Natural Sciences of Philadelphia. pp. 149-150; 176-177 [pl.7:6-7]
Synonyms:
Synedra amphirhynchus Ehr. 1843; Synedra vitrea Bory ex. Kütz. 1844; Synedra ulna var. amphirhynchus (Ehr.) Grun. 1862; Synedra ulna var. vitrea (Bory ex. Kütz.) V. H. 1885
Ecological Preference:

Meso-eutrophic
Description:
Valve is linear, becoming constricted before ending into attenuate-rostrate or sometimes slightly capitate apices; pseudoraphe is very narrow, with no central area; striae are parallel; length is 180-250µm, breadth is 4-7µm; striae count is 10-12 in 10µm
Projects:
  • Transect Project


    • Sample localities:
  • Water Conservation Area 2A (WCA 2A)