Genus: Cell body flat, constricted at the center; semicell with 2 or 4 thick spiny projections;
cells attached with each other at the center of their apex forming a filament, spiny projections
extending over the adjoining cell.
Species: Cell body 15-22 μm long, 17-25 μm wide, constriction 7-8.6 μm wide; semicells elongated ellipsoidal or broad hexagonal reniform, from both sides two short spines directing inward; apex flat with two long projections to connect with adjoining cell (Illustrations of The Japanese Fresh-water Algae, 1977). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
