Genus: Unicellular or colonial within a gelatinous sheath; planktonic; cell body spherical;
1 or several chloroplasts cup-shaped, with a pyrenoid
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:
Similar genus --> Dictyosphaerium Planktosphaeria ??,
cell body μm long, μm wide,
x 640, Nishikubo damp area, Miyadera, Iruma city, Saitama Pref., Japan, May 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640