Genus: Unicellular; cell body ellipsoidal or spindle-shaped, attached on a substrate at one end;
a single chloroplast plate-like in shape, with a pyrenoid
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:
Similar genus --> > Colacium; Characiopsis; Characiochloris; Hydiranum; Characium sp.,
cell body μm long, μm wide,
x 640, O-ike (pond), O-ike park, Yabuki town, Fukushima Pref., Japan, August 2003, by Y. Tsukii
50 μm
100 μm
150 μm; x 400