Family:
(Illustrations of The Japanese Fresh-water Algae, 1977).
Genus:
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:
Tetracystis sp. ??,
cell body spherical 8 μm in diam.,
x 640, Hakusui-Oike Park, Kasuga city, Fukuoka Pref., Japan, October 2001 by Y. Tsukii
31 μm
63 μm
94 μm; x 640