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 elongated ellipsoidal, (16-)18-24 μm long, 5.5-7(-10) μm wide; both ends rounded without cellwall thickening; cellwall thin; chloroplasts 2, 4 or 8 in number, parietal, disc-shaped, each with a single pyrenoid (Photomicrographs of the Freshwater Algae, vol. 6, 1987). |
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
Ushidome-ike (pond), Norikura highland, Azumi, Matsumoto city (formerly Azumi village), Nagano Pref., Japan, June 8, 2006 by Y. Tsukii
