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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, L/W=, x 640, No. 5, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Asterococcus Asterococcus Asterococcus Asterococcus

Images of collecting locality: No. 5, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii

Asterococcus superbus ?, cell body μm long, μm wide, L/W=, x 640, No. 3, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Asterococcus Asterococcus

Images of collecting locality: No. 3, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii

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