Genus: Colonies large, reticulated bag in shape
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cells arranged to form pentagonal or hexagonal intercellular space, which result in large reticulated bag; cell body cylindrical in shape (up to 1 cm long, 200 μm in diam.), with many nuclei; chloroplasts reticulated with many pyrenoids (Illustrations of The Japanese Fresh-water Algae, 1977).
gametes after release from the parent cell,
x 100, x 200, x 400, x 640, May-June 1999, Saitama Pref. by Y. Tsukii
50 μm 100 μm 150 μm; x 400 : 31 μm 63 μm 94 μm; x 640