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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)

Frustulia rhomboides 01

Frustulia rhomboides 01


Authority:
(Ehrenberg) de Toni
Year:
1891
References:
Schmidt, a. (1874-1959). Atlas der Diatomaceen-Kunde: Band I-III. O. R. Reisland, Leipzig. pp. 220-221 [fig.324]
Synonyms:
Navicula rhomboides Ehrenberg 1843; Vanheurckia rhomboides (Ehrenberg) Brébisson 1868; Frustulia rhomboides (Ehrenberg) De Toni 1891
Description:
Valve is rhombic-lanceolate, narrowing sharply to rounded apices; axial and central areas are narrow but distinct; transverse striae are parallel to the raphe at the valve centre, sometimes becoming slightly convergent toward the valve ends, but radiate at the apices; length is 70-160µm, breadth is 15-30µm; striae count is 20-30 in 10µm (both transverse and longitudinal)
Notes:
valve shape appears more sharply tapered than is pictured in most references
Projects:
  • Transect Project


    • Sample localities:
  • Loxahatchee (LOX)