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Gamophyceae: Zygnematales: Zygnemataceae

 Spirogyra arta
Jao

Spirogyra Genus:
Species: Vegetative cells 165-225 μm long, 15-17 μm diam., 1 chloroplast making 4-7 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spirogyra arta, septum folded, cell body 240 μm long, 17 μm wide, L/W=14.1, a single band-form chloroplasts making 4 turns in each cell, x 200, x 400, x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
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

Spirogyra tenuissima (Hassall) Kützing: Vegetative cells 66-198 μm long, 10-14 μm diam., 1 chloroplast making 3.5-6 tuns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

* Spiryogyra arta Jao: Vegetative cells 165-225 μm long, 15-17 μm diam., 1 chloroplast making 4-7 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spiryogyra tumida Jao: Vegetative cells 85-175 μm long, 16-19 μm diam., 1 chloroplast making 3-9 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spiryogyra inflata (Vaucher) Kützing: Vegetative cells 85-160 μm long, 19-20 μm diam., 1 chloroplast making 2.5-4.5 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

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