Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout whole length;
no hair-like structure; no branching.
Genus: A single trichome within a rigid sheath; sheath clear or yellowish; filaments planktonic or agglutinated (Illustrations of The Japanese Fresh-water Algae, 1977). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
