Genus: Similar to Chlamydomonas, but pyrenoids absent.
Species: Cell body spherical, 12-25 μm in diam. (young cell slightly ellipsoidal); papilla broad conical in shape; nucleus centrally located; a single chloroplast cup-shaped; stigma large, elliptical or circular in shape, located at anterior half of the cell; 2 contractile vacuoles at the base of flagella (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983). |
Images of collecting locality:
O-ike, Shiroyama Park, Okegawa city, Saitama Pref., Japan, January 29, 2006 by Y. Tsukii