Gonium Gonium

Chlorophyceae: Volvocales: Volvocaceae
Volvocica: Volvocina: Goniidae

Pascher, 1927

Gonium Genus: Flattened colonies of 16 or 8 cells embedded in gelatinous sheaths; cells nearly sphearical, with two flagella of equal length, a stigma and two contractile vacuoles; a single chloroplast cup-shaped, with a single or several pyrenoids; asexual reproduction by autocolony formation, each cell divides into a daughter colony; sexual reproduction isogamous (Photomicrographs of the Freshwater Algae, vol. 2, 1984).

Gonium sp., a disintegrated colony, cell body μm long, μm wide, x 640, near Nan-ko (lake), Shirakawa city, Fukushima Pref., Japan, August 2003, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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