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Gamophyceae: Zygnematales: Zygnemataceae

 Spirogyra ternata
Ripart

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: Vegetative cells (48-) 85-330 μm long, (55-) 60-85 μm diam., 3-4 chloroplasts making 1-3 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spirogyra sp., vegetative cells 105 μm long, 71 μm diam., 3 beaded ? chloroplasts with a longitudinal ridge making 1.5 turns in each cell, x 56, x 100, x 200, x 400, Saitama Pref., Japan, May-June 1999 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Spirogyra Spirogyra Spirogyra Spirogyra
x 100, x 200, x 400, x 640
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Spirogyra Spirogyra Spirogyra Spirogyra

* Spiryogyra ternata Ripart: Vegetative cells (48-) 85-330 μm long, (55-) 60-85 μm diam., 3-4 chloroplasts making 1-3 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

* Spiryogyra jugalis (Dillwyn) Kützing: Vegetative cells 80-300 μm long, 75-103 μm diam., 3-4 chloroplasts making 1-2 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

* Spiryogyra turfosa Gay: Vegetative cells 68-350 μm long, 68-78 μm diam., 3-4 chloroplasts making 1.5-4 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spiryogyra nitida (Dillwyn) Link: 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).

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