Genus: Colony of two cells, planktonic; cell body ellipsoidal, both ends rounded; two cells attached side by side;
cell wall smooth, covered thin spiny projections; each projection swell at the base;
two chloroplasts plate-like in shape, with a pyrenoid
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
