Chlorophyceae:
Tetrasporales: Gloeococcaceae
Chlamydophyceae: Tetrasporales: Palmellopsidaceae (Palmellaceae)
Asterococcus superbus
(Cienkowski, 1865) Scherffel, 1909
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).
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Asterococcus superbus, stock Tts-5,
axenic culture with KCM and Hyponex, from December 14, 2001 to January 9, 2002,
cell body 12-24 μm long, 11-21 μm wide,
two contractile vacuoles present,
chloroplasts radiating from the center of the cell body, flagella seems to be absent,
x 640, Showa Memorial Park, Tachikawa-ku, Tokyo, Japan, November 2001 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Asterococcus ?, stock Tts-5,
axenic culture with KCM and Hyponex, from January 9, 2002 to February 2, 2002,
cell body μm long, μm wide,
x 640, Showa Memorial Park, Tachikawa-ku, Tokyo, Japan, November 2001 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Asterococcus ?,
cell body μm long, μm wide,
two contractile vacuoles present, no eyespot (stigma),
x 640, Showa Memorial Park, Tachikawa-ku, Tokyo, Japan, November 2001 by Y. Tsukii
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