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

Chlamydomonas regularis
Korschikoff in Pascher 1927

Chlamydomonas Species: Cell body broad ellipsoidal (or slightly cylindrical), both ends rounded, 22-28 μm long, 18 μm wide; a small conical (slightly broad) papilla present; cellwall thick; flagella 1.5 times longer than the cell body; chloroplast filling the entire cell body, basically cup-shaped, inner space present at posterior half of the cell; a pyrenoid ellipsoidal or slightly irregular in shape, located at the center of the cell body; stigma large, irregular elliptical, at anterior; nucleus behind the pyrenoid (located at posterior half of the cell); (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

Chlamydomonas regularis Korschikoff in Pascher 1927, small variety ? (Agloë), cell body 16 μm long, 10 μm wide, papilla 1 μm long, a pyrenoid centrally located, a nucleus located at posterior half of the cell (behind the pyrenoid), x 640, Takasaka, Higashi-Matsuyama city, Saitama Pref., Japan, May 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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