Family: Chloroplasts plate-like or ribbon-like; sexual reproduction by isogamy.
Genus: Without gelatinous sheath; filaments consist of many cells; rhizoid formed at one end
(Illustrations of The Japanese Fresh-water Algae, 1977).
Similar Genus ->> Klebsormidium Ulothrix sp. ?,
vegetative cells μm long, μm diam., 1 chloroplast,
x 400, x 640, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, March 2001 by Y. Tsukii
150 μm; x 400