Section [ Ornatae ]:
Semicells circular, ellipsoid, reniform; cell surface granulated or spiny
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Cosmarium portianum W. Archer var. portianum,
cell body 32 μm long, μm wide,
x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Section [ Ornatae ]:
Semicells circular, ellipsoid, reniform; cell surface granulated or spiny
(Illustrations of The Japanese Fresh-water Algae, 1977).
31 μm
