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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum sexangulare
(Bulnheim) Lundell var. sexangulare

Staurastrum sexangulare Genus: Subgenus: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Section: Hoplastrum (Apexes of semicells with projections; arm-like projections granulated or dented).
Species: cell body excluding spines 28-44 μm long, 62-73 μm wide (with spines), constriction 85-15 μm wide, (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum sexangulare (Bulnheim) Lundell var. sexangulare, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum sexangulare Staurastrum sexangulare Staurastrum sexangulare
Staurastrum sexangulare Staurastrum sexangulare Staurastrum sexangulare

Images of collecting locality: Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii

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