Species: Cell body ellipsoidal or nearly spherical, 10-22 μm long, 8-22 μm wide; papilla absent; flagella 1.5-2 times longer than body length; chloroplast cup-shaped; a pyrenoid located at posterior half of the cell; stigma around equator, circular or elliptical in shape; nucleus anterior; sexual reproduction by isogamy; zygote surface smooth, colored red (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

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Pyrenoid: single, spherical in shape, located at posterior half
C. reinhardtii st. Tok-2, axenic flagellate stage 9-13 x 6-12 μm stigma at equator Otawara Tochigi, 2000	C. reinhardtii ? st. Tok-2, axenic flagellate stage 18 x 16 μm Otawara Tochigi, 2000	C. reinhardtii ? st. Tok-2, axenic flagellate stage 10-16 x 7-14 μm Otawara Tochigi, 2000	C. reinhardtii ? st. Tok-2, axenic palumella stage cell μm Otawara Tochigi, 2000
C. reinhardtii ? palumella stage cell 18 x 15 μm papilla absent pyr. posterior Japan, 2000	C. reinhardtii cell 17 x 15 μm papilla absent Shiraoka Saitama, 2003	C. reinhardtii cell μm papilla absent Yamato Kanagawa, 2003	C. reinhardtii cell μm Fujisaki-nichome Tsuchiura Ibaraki, 2003
C. reinhardtii ? cell 10 x 9 μm Kawanago Ishibashi Tochigi, 2004	C. reinhardtii ? cell 14 x 10 μm Watarase river Ashikaga Tochigi, 2004	C. reinhardtii ? 20 x 18 μm Iruma river Sayama Saitama, 2004	C. reinhardtii cell 9-10 x 8 μm Iruma river Sayama Saitama, 2004
C. reinhardtii ? 11-17 x 8-13 μm Oh-asoh Kumagaya Saitama, 2004	C. reinhardtii ? 12-15 x 9-14 μm Iruma river Kawagoe Saitama, 2004	C. reinhardtii stock Kkir-1,2,3 Iruma river Kawagoe Saitama, 2004	C. reinhardtii 11 x 8 μm Hirose athletic p. Kumagaya Saitama, 2004
C. reinhardtii ? 17-20 x 12-17 μm Doman-green p. Nishi-Urawa Saitama, 2003	C. reinhardtii ? st. Sdod-10 Doman-green p. Nishi-Urawa Saitama, 2003	C. reinhardtii ? st. Sdod-11 Doman-green p. Nishi-Urawa Saitama, 2003	C. reinhardtii ? cell μm Omine-numa Tsukiyono Gunma, 2003
C. reinhardtii ? cell μm Ikenokochi marsh Tsuruga Fukui, 2004	C. reinhardtii ? body spherical ? 14 x 14 μm s: behind equator Japan, 1999	C. reinhardtii ? 19 x 17 μm Nanbata-shinden Fujimi Fujimi, 2004	C. reinhardtii ? 13 x 12 μm Todoroki green l. Kawasaki Kanawaga, 2004
C. reinhardtii cell 16 x 13 μm Akigase park Saitama Saitama, 2005

Similar genus -> Chloromonas; Chlorococcum;

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