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:
Micrasterias apiculata (Ehrenberg) Meneghini ex Ralfs ,
cell body μm long, μm wide, L/W=, isthmus μm wide,
x 640, Water field near Bungo-Mori railway station, Kusu town, Oita Pref., Japan, September 8, 2008 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Cell body μm long, μm wide, L/W=,
Images of collecting locality:
Water field near Bungo-Mori railway station, Kusu town, Oita Pref., Japan, September 8, 2008 by Y. Tsukii