(Illustrations of The Japanese Fresh-water Algae, 1977).
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Similar species -->>Chrysocapsa; Tetracystis schmidlei (or Gloeosphearidium firmum ?),
cell body 4-7 μm in diam.,
x 640, Niigata Pref., Japan, May 2001, collected by N. Kinoshita, photo by Y. Tsukii
94 μm; x 640