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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Amphora proteus var. contigua
(Gregory 1857) Cleve
Peragallo & Peragallo (1897 – 1908). Diatoms of France (Atlas), pl. 44
Valves semi-elliptic to elliptic-lanceolate with acute ends. Dorsal margin convex; ventral margin straight. Raphe branches bent dorsally. Dorsal striae parallel at the center, becoming radiate towards the ends, interrupted by longitudinal line running along the raphe. Ventral striae composed of two rows separated by blank longitudinal band, which is not always clear under LM.
Occasionally found in surface sediments at Sprigger Bank, Florida Bay from water depth < 2m and salinity between 30 – 35ppt.
31 - 40.1 µm
6.8 - 10 µm