Species [ var. simonyi ]:
Cell body 19-24 μm long, 18-25 μm (excluding spines),
isthmus 6-7.5 μm wide,
6 short spines at each side of trianglur semicell in top view
[ var. sparse-aculeatum (Schmidle) Hirano ]: Cell body 19.6-23.7 μm long (excluding spines), 19.6-19.8 μm wide (excluding spines), isthmus 5.6-7.7 μm wide, spines equal in length (Illustrations of The Japanese Fresh-water Algae, 1977) |
31 μm
63 μm
94 μm; x 640
Staurastrum simonyi similar to S. polymorphum (Subgenus Eustaurastrum),
cell body 21 μm long, 31 μm wide, L/W=0.7, isthmus 8 μm wide,
x 640, a small pond at Kowashimizu, Suwa city, Nagano Pref., Japan, July 16, 2007 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
