Genus:
Subgenus: with arm-like projections
(Illustrations of The Japanese Fresh-water Algae, 1977)
Section: Hoplastrum (Apexes of semicells with projections; arm-like projections granulated or dented).
Species:
cell body excluding spines 28-44 μm long,
62-73 μm wide (with spines),
constriction 85-15 μm wide,
(Illustrations of The Japanese Fresh-water Algae, 1977)
Staurastrum sexangulare (Bulnheim) Lundell var. sexangulare,
cell body μm long, μm wide, L/W=, isthmus μm wide,
x 640, No.1, Ko-numa (pond/marsh), Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, October 12, 2008 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Images of collecting locality:
No.1, Ko-numa (pond/marsh), Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, October 12, 2008 by Y. Tsukii