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.
Witkowski et al. (2000):"Iconographia Diatomologica (Vol.VII). Diatom flora of marine coast I", pg. 355, Pl.159:1-6;
Navicula aspera (Ehrenberg), Stauroneis pulchella (W. Smith)
Valves lineolate-lanceolate to elliptic or elongated rhomboid, 42-140µm long, 22-35µm broad with obtusly rounded ends. Axial area very narrow or linear and unilateral, central area appears as a broad stauros that is not reaching to the margin, widened and truncate outwards. Areoly forming transverse striae, radiate throughout the valve, 11-15 in 10µm.
45 - 90 µm
24 - 35 µm
6 - 9