Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Trichome pale-blue in color, nearly straight, gradually tapering to both curving ends,
sometimes slightly constricted at cell-cell junction, 5-6 μm wide; cell body 3-5 μm
long (about 2/3 of its width); terminal cells rounded
(Illustrations of The Japanese Fresh-water Algae, 1977).
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