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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum gladiosum
Turner

Staurastrum gladiosum 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:

Staurastrum gladiosum Turner (or S. teliferum ?), cell body 48 μm long (excluding spines), μm wide, L/W=, isthmus μm wide, x 640, Kareki-numa marsh, Nikko city (formerly Fujiwara town), Tochigi Pref., Japan, September 24, 2008 collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum gladiosum Staurastrum gladiosum Staurastrum gladiosum

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