Genus:
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 77 μm long, 73 μm wide
(Illustrations of The Japanese Fresh-water Algae, 1977).
Micrasterias pinnatifida (Kützing) Ralfs,
cell body μm long, μm wide, L/W=, isthmus μm wide,
x 640, Block 4, Kashibaru marsh, Karatsu city, Saga Pref., Japan, September 9, 2008 by Y. Tsukii 50 μm
100 μm
150 μm; x 400
Images of collecting locality:
Block 4, Kashibaru marsh, Karatsu city, Saga Pref., Japan, September 9, 2008 by Y. Tsukii