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Chlorophyceae: Tetrasporales: Gloeococcaceae
Chlamydophyceae: Tetrasporales: Palmellopsidaceae (Palmellaceae)

Asterococcus superbus
(Cienkowski, 1865) Scherffel, 1909

Asterococcus superbus Genus: Planktonic; unicellular or colony of 4, 8, or 16 cells; both cells and its colony covered with layers of mucous sheath; cell body spherical; cell wall smooth; a single chloroplast star-shaped, with a pyrenoid located at the center (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Cell body spherical, 15-20 μm in diam.; a single chloroplast star-shaped, with a pyrenoid (Illustrations of The Japanese Fresh-water Algae, 1977).

Asterococcus superbus, cell body μm long, μm wide, two contractile vacuoles present, x 640, Toneri Park, Adachi-ku, Tokyo, Japan, December 2001 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Asterococcus Asterococcus Asterococcus Asterococcus
Cell body broad ellipsoidal, 24 μm long, 21 μm wide
Asterococcus Asterococcus
A mature cells slightly flattened by pressing with coverglass
Asterococcus Asterococcus Asterococcus
Young cell body ellipsoidal, 13 μm long, 10 μm wide
Asterococcus Asterococcus

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