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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum hirsutum
(Ehrenberg) Brébisson in Ralfs

Staurastrum hirsutum 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: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)

Species: Cell body 31-47 μm long (excluding spines), 31-47 μm wide, L/W=1.25, isthmus 11-15 μm (Illustrations of The Japanese Fresh-water Algae, 1977)


Staurastrum hirsutum (Ehrenberg) Brébisson or S. monticulosum Brébisson var. bidens W. et G.S. West ?, cell body 33 μm long, 30 μm wide, L/W=1.1, isthmus 11 ? μm wide, x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum Staurastrum


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