Genus: Colonies spherical or aggregates in shape; sheath conspicuous; cell body spherical in shape;
chloroplasts cup-shaped or plate-like (Illustrations of the Japanese fresh-water algae, 1977).
Gloeocystis (or Gloeocapsa ?),
colony spherical in shape, 120 μm in diam.,
cell body ellipsoidal, 12 μm long, 8 μm wide,
x 640, rice field, Tennoh, Tessei-cho, Okayama Pref., Japan, November 22, 2004 by Y. Tsukii
94 μm; x 640