image_list image_listE

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

Please click on images for viewing enlarged.
Copyright Protist Information Server