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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum longiradiatum
var. breviradiatum Grönblad

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 longiradiatum var. breviradiatum Grönblad, cell body 30 μm long, 60 μm wide, isthmus 7 μm wide, x 640, Murakuni ike (pond), Iwatsuki-bunka Park, Iwatsuki-ku (formerly Iwatsuki city), Saitama city, Saitama Pref., Japan, April 9, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum longiradiatum Staurastrum longiradiatum Staurastrum longiradiatum Staurastrum longiradiatum Staurastrum longiradiatum

Images of collecting locality: Murakuni ike (pond), Iwatsuki-bunka Park, Iwatsuki-ku (formerly Iwatsuki city), Saitama city, Saitama Pref., Japan, April 9, 2006 by Y. Tsukii

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