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.
Guide methodologique pour la mise en oeuvre de I'Indice biologique diatomees"(2000), Pl.50;
Valves crescent-shaped with blountly rounded ends, slightly reflexed ventrally, 12-60µm long, 3.5-9µm broad. Raphe straight, with central pores standing far apart. Central nodule robust, apically elongated. Axial area on the dorsal site , slender, central area absent. Dorsal striae radiate, 17-26 in 10µm, farder apart in the middle, distinctly punctate throughout, ventral side structureless out to the marginal row of shorter dashes.
26.1 - 31.5 µm
3.8 - 5.7 µm
15 - 19