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 zonata ?,
vegetative cells μm long, 27-47 μm diam., with 1 chloroplast,
x 200, x 400, x 640, Takamatsu, Matsumoto, Nagano Pref., Japan, May 2001, collected by N. Kinoshita, photo by Y. Tsukii
150 μm; x 400
x 400, x 640