Species: Colonies forming a slightly curved square or rhomboid, up to 65-90 μm in width;
cell body up to 18-20 μm in diam.
(Photomicrographs of the Freshwater Algae, vol. 2, 1984).
Gonium pectorale Müller,
colony 52 μm in diam.,
cell body nearly spherical, about 10-11 μm in diam.,
x 640, Mizuko-kaizuka park, Fujimi city, Saitama Pref., Japan, May 9, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640