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 34 μm long, 26 μm wide, isthmus 11 μm wide,
x 640, Numappara marsh, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, August 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
