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Cyanophyceae: Nostocales: Oscillatoriaceae

 Oscillatoria iwanoffiana
(Nygaard) Geitler

Oscillatoria iwanoffiana Genus: A single trichome within a rigid sheath; sheath clear or yellowish; filaments planktonic or agglutinated (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body 2-5 μm long, 5-9 μm wide, L/W=0.5; (Illustrations of The Japanese Fresh-water Algae, 1977).

Oscillatoria iwanoffiana (Nygaard) Geitler ?, cell body 4-8 μm long, 7 μm wide, L/W=, x 640, Shimo-kawahara Park (near Iruma river), Sayama city, Saitama Pref., Japan, March 7, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria iwanoffiana

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