Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Trichome straight, without constriction at cell-cell junction, tapering at both ends, 4-6.5 μm wide;
cell body short, 1.5-3 μm long (1/3-1/2 of its width); granules present along septum
(Illustrations of the Japanese Fresh-water Algae, 1977).
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