Genus: Two flagella of equal length inserted close together into an anterior papilla of variable shape usually directed anteriorly; chloroplast form variable; usually 2 contractile vacuoles; cell division producing 2-8 zoospores; sexual reproduction usually isogamous, anisogamy and oogamy known but rare; > 500 species, mostly fresh water (Illustrated Guide, 1985). A large chloroplast; stigma; a single nucleus; two contractile vacuoles anterior (Kudo, 1966).

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Chlamydella: Chloroplast cup-shaped; pyrenoid central lateral; nucleus anterior-posterior
C. parvula 6 samples n. posterior papilla absent 8-15 μm long 2000-2003	C. peterfii 9 samples n. cent.-anterior papilla absent 10-23 μm long 200-2005	C. sp. C. peterfii ? & stock Cis-100 μm Sendabori Matsudo Chiba, 2002	C. moewusii 8 samples n. cent.-anterior papilla present 11-27 μm long 2001-2005
C. monadina 3 samples horse-shoe shaped p. 16-22 x 12-19 μm 2002-2006	C. hallensis 15 x 7 μm diam. Mizuko Fujimi Saitama, 2003	Chlamydomonas sp. ? s: xxxx Shishizuka Tsuchiura Ibaraki, 2003	Chlamydomonas sp. 10-15 x 8-14 μm s: xxxx Kiyose Tokyo, 2001
Chlamydomonas sp. 8 x 7 μm Showa-machi g.p. Showa Saitama, 2003	Chlamydomonas sp. 16 μm diam. s: xxxx ? Kurihashi Saitama, 2001	Chlamydomonas sp. 12 x 4 μm diam. Omine-numa Tsukiyono Gunma, 2003	Chlamydomonas sp. 12 x 7-8.5 μm diam. near Todoroki g.l. Kawasaki Kanawaga, 2004

Similar genus -> Chloromonas; Chlorococcum;

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