Species: Cell body ellipsoidal or nearly cylindrical, both ends rounded, 8-10 μm long, 4-6 μm wide; papilla absent; cellwall thick; flagellar length about the same as body length; chloroplast cup-shaped; a spherical pyrenoid central-lateral; stigma at anterior 1/3 of the cell; nucleus behind the pyrenoid (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

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Pyrenoid: single, spherical in shape, located at equatorial side
C. parvula 8.5-15 x 4-8.5 μm s: anterior Sendabori Chiba, 2002	C. parvula 10-14 x 5-8 μm s: anterior Doman-green Park Nishi-Urawa Saitama, 2003	C. parvula ? stock Sak-6b 9-10 x 5-7 μm or posterior s: anterior Asaka Saitama, 2000	C. parvula ? stock Sak-6b 9-10 x 4-7 μm or posterior s: anterior Asaka Saitama, 2000
C. parvula ? stock Sak-6b μm or posterior s: anterior Asaka Saitama, 2000	C. parvula ?? 9-12 x 4-7 μm s: centr.lateral Kata-numa Narugo Miyagi, 2003	C. parvula ?? or Asterococcus ? 8-19 x 7-16 μm s: centr.lateral Urawa Saitama, 2001

Similar species -> C. biciliata;
Similar genus -> Chloromonas; Chlorococcum;

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