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 in Cleve & Moller 1879) Mann
Round, F.E. et al. (1990):"The Diatoms. Biology and Morphology of the genera", pg. 678;
Nitzschia granulata (Grunow in Cleve & Grunow)
Valves elliptic to elliptic-lanceolate with cuneate apices, 25-45µm long, 10-22µm broad. Raphe strongly eccentric, fibulae spaced equaly, 6-8 in 10µm. Transapical striae coarsely punctate 6-8 in 10µm, puncta spaced irregularly, interrupted by an indistinct longitudinal fold.
epipelic species, common in surface sediment samples collected in Florida Bay