Family: Chloroplasts plate-like or ribbon-like; sexual reproduction by isogamy.
Genus:
Without gelatinous sheath; filaments consist of many cells; no rhizoid
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Similar Genus ->> Ulothrix Klebsormidium or Geminella ?,
cell body 24 μm long, 8 μm wide, L/W=3,
x 640, riverside at Satsunai river, Obihiro city, Hokkaido, Japan, October 15, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640