Family: An aggregate consisting of several cells; without spiny hairs; a chloroplast plate-like.
Genus: Aerial algae (Illustrations of the Japanese fresh-water algae, 1977).
Species: Unicells or short filaments or aggregates consisting of several cells; cell body spherical or short cylindrical, 5-12 μm in diam.; a single chloroplast plate-like; (Illustrations of the Japanese fresh-water algae, 1977).
Images of collecting locality:
a guardrail at Prefectural road route 272 (Tsukiyono-Sarugakyo-Onsen-sen), Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii