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.
Amphora maletractata var. constricta
Witkowski et al. (2000). Iconographia Diatomologica (Vol.VII). Diatom flora of marine coast. Part 1. pg.144, Pl.167:12-16;
Amphora interrupta var. constricta (Heiden in Heiden & Kolbe, 1928)
Valves semi-lanceolate with constricted dorsal margin, ventral margin straight with produced slightly capite apices, 25-35µm long, 3-5.5µm broad. Raphe straight, axial area unilateral, developed on the ventral side, central area rectangular. Dorsal striae punctate, interrupted by a lanceolate hyaline area, 11-14 in 10µm, on the ventral side 16-23 in 10µm.