Genus: Planktonic; colony of 2-8 cells surrounded by cell wall of their mother cell, but sometimes unicellular;
cell body broad ellipsoidal, both ends slightly pointed and with a thick cell wall;
1-3 chloroplasts parietal plate-like, with a single pyrenoid
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Cell body ellipsoid to broad-ellipsoid, with a slightly projected, thickened cell wall at both ends, 12-18 μm long, 8-16 μm wide; 2, 4, or 8 autospores enclosed within a enlarged mother cellwall; chloroplasts 1-4, parietal laminate, each with a pyrenoid (Photomicrographs of the Freshwater Algae, vol. 18, 1997). |
31 μm
63 μm
94 μm; x 640
