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

 Chloromonas ulla
(Skuja) Gerloff et Ettl in Ettl 1970
Syn. Chlamydomonas ulla Skuja 1956, C. vulgaris fo. gallica Bourrelly 1951

Chloromonas Genus: Similar to Chlamydomonas, but pyrenoids absent.
Species: Cell body spherical, 12-25 μm in diam. (young cell slightly ellipsoidal); papilla broad conical in shape; nucleus centrally located; a single chloroplast cup-shaped; stigma large, elliptical or circular in shape, located at anterior half of the cell; 2 contractile vacuoles at the base of flagella (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

Chloromonas ulla (Skuja) Gerloff et Ettl or similar species, cell body 24 μm long, 21 μm wide, L/W=1.1, flagella about ? μm long, a flattened papilla present, a single nucleus located at the center of the cell, elliptical stigma at equator of the cell body, x 640, O-ike, Shiroyama Park, Okegawa city, Saitama Pref., Japan, January 29, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Chloromonas Chloromonas

Images of collecting locality: O-ike, Shiroyama Park, Okegawa city, Saitama Pref., Japan, January 29, 2006 by Y. Tsukii

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