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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum incurvum
(Hirano) Hirano var. incurvum

Staurastrum 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:

Staurastrum incurvum (Hirano) Hirano var. incurvum ?, cell body 25 μm long, 30 μm wide (including arm-like projections), L/W=0.8, isthmus 10 μm wide, x 640, Kenashitai (marsh), Hakkoda mountain, Aomori city, Aomori Pref., Japan, July 17, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum

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