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Gamophyceae: Zygnematales: Zygnemataceae

 Zygnema sp.

Zygnema Genus: Filament without branching; cell body cylindrical; two chloroplasts star-shaped; tubes formed (or cell body fused) at conjugation; zygospore spherical or broad ellipsoidal formed within female gametangium (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:

Zygnema sp., cell body 23-47 μm long, 26 μm wide, L/W=0.9-1.8, x 640, riverside at Satsunai river, Obihiro city, Hokkaido, Japan, October 15, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Zygnema Zygnema

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