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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum dispar
Brébisson

Staurastrum dispar Species: Cell body small in size, 25.8-32.8 μm long, 25.8-33.6 μm wide, isthmus 7-11 μm wide; semicells elliptical diamond- or spindle-shaped in side view, upper side of lateral margins more convex than lower ones; apical view triangular with concaved margins, each corner truncated; cell wall covered with granules arranging circularly aroung the corners (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum dispar Brébisson ??, cell body ? μm long, 30 μm wide (including arms), L/W=, isthmus 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 Staurastrum
Cell body 20 μm long, 28 μm wide (including arms), L/W=0.7, isthmus 7 μm wide, x 640
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