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Cyanophyceae: Nostocales: Oscillatoriaceae

Oscillatoria curviceps
Agardh var. curviceps

Oscillatoria curviceps Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Trichome blue-green in color, nearly straight or slightly curved, both ends slightly tapered and slightly curved, without constriction at cell-cell junction, 10-17 μm wide (cf. O. limosa, 15-20 μm); cell body short in length, 2-5 μm long (1/6-1/3 of its width); sometimes with granules along septum; terminal cells rounded with flattened apex (Illustrations of The Japanese Fresh-water Algae, 1977).


Oscillatoria curviceps Agardh var. curviceps ?, cell body 2-3 μm long, 10.5 μm wide, L/W=0.2-0.3, x 640, Watasuge marsh (or bog), Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, July 3, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Oscillatoria


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