Genus: Unicellular; variable in shape; a constriction at the center of the cell body; mostly longer than wide; flattened; each semicell hemispherical, spherical, ellipsoidal, rectangular, pyramidal or kidney-shaped; no apical indentation (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body rectangular, 34-38 μm long, 34-38 μm wide; isthmus 14-15 μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).
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C. latifrons ?
54-56 x μm
Tsukamoto
Sakura-ku
Saitama, 2004
C. latifrons ?
54-56 x μm
Shimo-muneoka
Shiki
Saitama, 2004
