Family: Filamentous algae attached to a substrate at base, differentiation of axis-branch structure variable; cell body cylindrical, spherical or elongated ellipsoidal, with one or several plate-like chloroplasts; pyrenoids one to several in number or absent; terminal cells tapered or rounded at its end (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Filament with branching; cell body cylindrical; a single chloroplast plate-like, slightly curved, apical cells rounded; differentiaton of axial and branching filaments conspicuous (Illustrations of The Japanese Fresh-water Algae, 1977).
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Similar Genus -> Chaetophora; Cladophora;
C. plumosa ?