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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum sebaldi
Reinsch var. sebaldi

Staurastrum sebaldi 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: Cell body 67-75.6 μm long (excluding spines), 84 μm (including spines), 67-92 μm wide, isthmus 16.8-19.5 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum sebaldi Reinsch var. sebaldi, cell body 82 μm long, 85 μm wide, L/W=1.0 (excluding spines), isthmus 16 μm wide, x 640, wetland near Ichinose-enchi, Norikura highland, Azumi village, Nagano Pref., Japan, May 28, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi
Cell body 82 μm long, 90 μm wide, L/W=0.9 (excluding spines), isthmus 21 μm wide, spines up to 5 μm long, x 640
Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi
Cell body 79 μm long, 90 μm wide, L/W=0.9 (excluding spines), isthmus 19 μm wide, spines up to 5 μm long, x 640
Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi
Cell body 79 μm long, 90 μm wide (including arms), L/W=0.9, isthmus 22 μm wide, spines up to 5 μm long, x 640
Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi Staurastrum sebaldi

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