Genus: Subaerial algae or a algal component of lichens; unicells; cell body 10-15 μm in diam.,
chlorplast(s) star-shaped or aggregated, with a single pyrenoid at the center
(Illustrations of The Japanese Fresh-water Algae, 1977).
Trebouxia sp. ?,
cell body spherical, μm in diam.,
x 640, rice field, Tsukamoto, Sakura-ku, Saitama city, Saitama Pref., Japan, July 25, 2004 by Y. Tsukii
94 μm; x 640