Genus: Colony spherical; 8-16 cells of similar size, close together, mutually compressed;
2-layered gelatinous envelope; cells with 2 equal-length flagella;
2 contractile vacuoles anterior; nucleus central (Illustrated Guide, 1985).
Species:
Similar genus -> > Eudorina (anisogamy);
Yamagishiella (single pyrenoid);
Pandorina charkowiensis Korshikov 1923 (or Yamagishiella unicocca Nozaki 1992 ?),
cell body μm long, μm wide, with several pyrenoids,
x 640, Lake Biwa, Maihara town, Shiga Pref., Japan, June 2003, by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640