(Illustrations of The Japanese Fresh-water Algae, 1977).
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Tetracystis sp. (?), stock Ikk-21, axenic culture with Hyponex and KCM, after prolonged culture (6/16-8/2),
cell body 7-15 μm in diam.,
x 640, Kaga, Ishikawa Pref., November Japan, 2000 by Y. Tsukii
94 μm; x 640