Species: Cells bright blue-green, sometimes coarsely granulated,
8-32 μm in diam. (without sheath), sheaths 2-6 μm in thickness
(Photomicrographs of the Freshwater Algae, vol. 3, 1985).
Chroococcus turgidus (Kützing) Nägeli var. thermalis Rabenhorst,
cell body 22 μm in diam., sheath 2 μm in thickness,
x 640, Imou bog, Toyohashi city, Aichi Pref., Japan, September 11, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640