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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum hirsutum
(Ehrenberg) Brébisson in Ralfs

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: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)

Species: Cell body 31-47 μm long (excluding spines), 31-47 μm wide, L/W=1.25, isthmus 11-15 μm (Illustrations of The Japanese Fresh-water Algae, 1977)


Staurastrum hirsutum (Ehrenberg) Brébisson, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, No.4, Kuroyachi marsh, Hachimantai, Hachimantai city, Iwate Pref., Japan, August 23, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum

Staurastrum hirsutum (Ehrenberg) Brébisson or S. monticulosum Brébisson var. bidens W. et G.S. West ?, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, No.4, Kuroyachi marsh, Hachimantai, Hachimantai city, Iwate Pref., Japan, August 23, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum
Cell body μm long, μm wide, L/W=, isthmus μm wide, x 640
Staurastrum Staurastrum Staurastrum

Images of collecting locality: No.4, Kuroyachi marsh, Hachimantai, Hachimantai city, Iwate Pref., Japan, August 23, 2007 by Y. Tsukii


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