ฉันรักแปลGenus: Cell body flat, large, variable in shape, longer than wide; strong constriction at center; each semicell with several notches; cell wall with many short spines (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: cell body 123-195 μm long, 113-186 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977)