 
 
|  Genus: 
Cell body short, radiate in shape; apical view of the cell, triangular, polygonal, 
ellipsoidal or spindle-shaped; zygospores formed outside of mother cells 
(Illustrations of The Japanese Fresh-water Algae, 1977) Subgenus: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977) Species: 
 
 | 
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400 :
 150 μm; x 400 : 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
Staurastrum sp, x400, x 640, by Y Tsukii
 
 
Staurastrum pseudosebaldi var simplicius W West: Body with arms 322 μm long, 51-52 μm wide, constriction 86 μm wide; body length slightly shorter than width; arm-like projections of hemicells short, 3 spines at each terminal; small spines aligned at apex; 3 spines at terminal of the arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)