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Cyanophyceae: Nostocales: Oscillatoriaceae

Oscillatoria curviceps
Agardh var. 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 (0.16-0.33) of its width); sometimes with granules along septum; terminal cells rounded with flattened apex (Illustrations of The Japanese Fresh-water Algae, 1977).
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Oscillatoria
O. curviceps ?
3? x 13 μm
L/W=0.2
Ukishima marsh
Tsugaike highland
Nagano, 2005
Oscillatoria
O. curviceps
12.5 μm φ
L/W=0.2-0.36
Kabuto-yama
Nishi-no-miya
Hyogo, 2004
Oscillatoria curviceps
O. curviceps ?
1.5-3 x 12 μm
L/W=0.13-0.25
Izumi 741
Namegawa
Saitama, 2004
Oscillatoria
O. curviceps ?
3.5 x 12 μm
L/W=0.21
Izumi 741
Namegawa
Saitama, 2004
Oscillatoria curviceps
O. curviceps
11.5 μm φ
L/W=0.26
Saitama studium
Saitama
Saitama, 2006
Oscillatoria curviceps
O. curviceps
11.5 μm φ
L/W=0.26
Kurome river
Asaka
Saitama, 2005
Oscillatoria curviceps
O. curviceps ?
11 μm φ
L/W=0.3-0.5
Furu-tone river
Kasukabe
Saitama, 2004
Oscillatoria curviceps
O. curviceps ?
11 μm φ
L/W=0.18-0.32
Tsuki river
Ranzan
Saitama, 2003
Oscillatoria curviceps
O. curviceps ?
2-3 x 10 μm φ
L/W=0.2-0.3
Mizuko
Fujimi
Saitama, 2003
Oscillatoria
O. curviceps ?
2-3 x 10.5 μm
L/W=0.2-0.3
Watasuge marsh
Tsugaike highland
Nagano, 2005
Oscillatoria
O. curviceps ?
2 x 10.5 μm
L/W=0.2
Gozaisho marsh
Hachimantai
Iwate, 2005

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Oscillatoria curviceps
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