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Chlorophyta: Gamophyceae: Zygnematales: Zygnemataceae

Spirogyra ellipsospora

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 : Vegetative cells 125-500 μm long, 125-150 μm diam., 3-8 chloroplasts making 0.4-5 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spiryogyra ellipsospora (or ??), tape No. 0068, time code 1710, 3 ? band-form chloroplast making turns in each cell, Hiroshima Pref., Japan, September 1998 by Y. Tsukii

Spirogyra sp., tape No. 0068, time code 2259, Hiroshima Pref., Japan, October, 1998 by Y. Tsukii

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