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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum furcatum
f. spinosa Grönblad

Staurastrum forficulatum 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:
Similar species -- >> S. sexangulare;


Staurastrum furcatum f. spinosa Grönblad ?, cell body 33 μm long, 30 μm wide (including spiny projections), L/W=1.1, isthmus 10 μm wide, x 100, x 200, x 640, a small marsh pond near memorial pole of Saito Mokichi (close to Iroha-numa), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum
Staurastrum Staurastrum Staurastrum Staurastrum

Images of collecting locality: a small marsh pond near memorial pole of Saito Mokichi (close to Iroha-numa), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii


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