Cell body spherical in shape, 18-28 μm in diam.;
a single pyrenoid located at the center of the cell body;
papillae absent; stigma and nucleus located anteriorly
(Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
Similar tetra-flagellates -->> Zoospores of Geminella; Carteria globosa Korschikoff in Pascher 1927 ?,
cell body nearly spherical, 18 μm in diam.,
x 640, Ikenokochi (or Ikenokouchi) marsh, Tsuruga city, Fukui Pref., Japan, September 11, 2004 by Y. Tsukii
94 μm; x 640