Genus: Filamentous algae, axis-branch differentiation incomplete; terminal cells tapered to form spiny projections;
branches do not form in tuft
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
