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.
(Ehrenberg) O. Muller
Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.2/2, pg.159, Fig.111:1-13;
Navicula gibba Ehr. 1832; Epithemia gibba (Ehr.) Kütz. 1844; Cystopleura gibba (Ehr.) DeT. 1891; Rhopalodia gibba (Ehr.) O. Müll. 1895
Frustule is usually seen in girdle view, linear with valve swollen and notched in central portion, sometimes with slightly swollen apices, and slightly ventrally bent ends; valve is sharply bent, with one bend apparent in girdle view, the other causing the raphe to lie on the edge of the valve in girdle view; raphe has no distinct nodules, appearing notched in the middle due to the valve shape; costae are well-developed, usually with 2-3 (sometimes 1) rows of alveoli between the costae (6-8 in 10µm); 12-16 rows of alveoli in 10µm; length is 80-300µm, breadth is 18-30µm (frustule), 8-11 (valve)