Genus (Diesing): Cells obovate or almost spherical, flattened dorsoventrally;
rod-shaped trichocysts around cell periphery or concentrated at the 2 ends of the cell;
flagella usually same length as cell; but trailing flagellum may reach twice that length;
many chloroplasts in a single layer in the cell periphery (Illustrated Guide, 1985).
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body circular in shape, dorsoventrally flattened, about 35 μm long, 10 μm in thickness; a nucleus ellipsoidal, located at the center of the cell body; many elliptical chloroplasts located at perphery of the cell body; trichocysts uniformly distributed (Illustrations of The Japanese Fresh-water Algae, 1977).
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50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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