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Chlorophyceae: Chlamydomonadales (Volvocales): Chlamydomonadaceae
Volvocida: Chlamydomonadina: Chlamydomonadidae

 Chlamydomonas reinhardtii
Dangeard, 1888

Chlamydomonas reinhardtii 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).

Chlamydomonas reinhardtii Dangeard ??, cell body 11-17 μm long, 8-13 μm wide, x 640, Oh-asoh (very close to Ara-kawa), Kumagaya city, Saitama Pref., Japan, February 29, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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