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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum iotanum
Wolle var. iotanum

Staurastrum iotanum 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 [var. iotanum]: Cell body with 3 arm-like projections, 11 μm long (excluding arms), 18-22 μm long (including arms), 9.8 μm wide (excluding arms), 18-22 μm wide (including arms), isthmus 4-5 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977)


Staurastrum iotanum Wolle var. iotanum, cell body 19 x 35 μm (including arms), 14 x 13 μm wide (excluding arms), L/W=, isthmus 5 μm wide, arms up to 10 μm long, x 640, Tane-ike (pond), Togakushi highland, Shinano town, Nagano Pref., Japan, June 12, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum iotatum Staurastrum iotatum Staurastrum iotatum Staurastrum iotatum


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