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 Van Heurck
Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.2, pg.26,27, Taf.17:4-8;;
Nitzschia obtusa var. nana ((Grunow) Van Heurck 1885), Nitzschia obtusa var. lepidula (Grunow in Cleve & Grunow 1880), Nitzschia ignorata (Krasske 1929)
Valve is linear, with slightly sigmoid ends; length is 35-120µm, breadth is 3-4.5µm; 7-11 fibulae in 10µm; striae count is 30-36 in 10µm
35 - 120 µm
3 - 5 µm
7 - 10