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,
cell body μm long, μm wide,
x 640, river bank of Arakawa, near Doman-green Park, Nishi-Urawa, Saitama Pref., Japan, November 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640