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 .
You can also click on one of labeled areas on the map to browse by location.
(Grunow ex A. Schmidt) Mann
Round, F.E. et al. (1990):"The Diatoms. Biology and Morphology of the genera", pg. 572, 573, Fig.a-h;
Amphora angusta var. glacilenta (Grunow)
Valve semi-lanceolate with acutely rounded apices, 31.5-46.8µm long, 5.11-6.20µm broad. Dorsal margin smoothly curved, ventral margin more or less straight. Raphe filiform with dorsally bent distal ends and simple proximal ends. Axial area on the dorsal side extensive, on the ventral side narrow. Central area developed on the dorsal side, on the ventral side boarded by ventral striae. Dorsal striae straight at the central part, becoming slightly radiate towards the ends, 19-21 in 10µm. Ventral striae short, uninterrupted at the centre 16-18 in 10µm.