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Gamophyceae: Zygnematales: Zygnemataceae

 Spirogyra sp.

Spirogyra Genus: Filament without branching; cell body cylindrical; one or several chloroplasts band-shaped, spirally arranged within the cell, pyrenoids present; septum with or without folded structure (Guide book to the "Photomicrographs of the Freshwater Algae", 1998). About 300 species (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Spirogyra sp., cell body 150-265 μm long, 21 μm wide, a single band-form chloroplast making 1.5-2.5 turns in each cell, x 200, x 400, x 640, Kawaguchi Natural Park, Sashima, Kawaguchi city, Saitama Pref., Japan, January 29, 2005 by Y. Tsukii
scale 100 μm scale 200 μm scale 300 μm; x 200 : scale 50 μm scale 100 μm scale 150 μm; x 400
Spirogyra Spirogyra
x 640
Spirogyra Spirogyra Spirogyra Spirogyra Spirogyra
x 400, x 640
Spirogyra Spirogyra Spirogyra

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