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:

31 μm 63 μm 94 μm; x 640

Staurastrum johnsonii W. et G.S. West, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, Wetland II, Kashibaru marsh, Karatsu city, Saga Pref., Japan, September 9, 2008 by Y. Tsukii
31 μm 63 μm 94 μm; x 640

Images of collecting locality: Wetland II, Kashibaru marsh, Karatsu city, Saga Pref., Japan, September 9, 2008 by Y. Tsukii