Genus: Arrangement of 4 daughter cells flat and rectangular in shape, forming composite coenobium;
without gelatinous sheaths, no hairly projections (Illustrations of the Japanese Freshwater Algae, 1977).
Species: Colonies of 4 cells; cell body triangular in shape, 4-10 μm wide; a single chloroplast plate-like, with a pyrenoid (Illustrations of the Japanese Freshwater Algae, 1977). |
31 μm
63 μm
94 μm; x 640
Crucigenia tetrapedia (Kirchner) W. et G.S. West,
colonies ellipsoidal, about 8 μm long, 6 μm wide,
cell body 3 μm long, 4 μm wide,
x 640, Bessho-numa, Saitama Pref., Japan, June 2001 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
