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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, cell body 23 μm long, 21 μm wide, L/W=1.1, small conical papilla present (about 1 μm high), stigma located at equator, elongate elliptical in shape (3 μm long), x 640, Iroha-numa (marsh), Zao mountain, Yamagata city, Yamagata Pref., Japan, July 9, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Chloromonas Chloromonas
Cell body 19 μm long, 15 μm wide, L/W=1.3, x 640
Chloromonas Chloromonas
Cell body 21 μm long, 20 μm wide, L/W=1.1, x 640
Chloromonas Chloromonas

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