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:
|
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Micrasterias foliacea Bailey: Cell body small, nearly rectangular, length = width; strong constriction at center; semicell also rectangular with indentations (notches); a paired protrusion at the apical end; 73-78 μm long, 67-70 μm wide, constriction 14 μm wide; cells attached antero-posterially to form a band-like colony (Illustrations of The Japanese Fresh-water Algae, 1977).