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Cyanophyceae: Nostocales: Oscillatoriaceae

Oscillatoria tenuis
[C. Agardh 1813] Gomont 1892 (John et al. ed. 2002)

Species [ var. tenuis Agardh ]: Trichome straight, bluegreen, slightly curved at terminal, 2.5-5 μm long, 4-10 μm wide, L/W=1/3 (0.3); septum slightly constricted, granules present along septum; apical cells semispherical, its wall sometimes thickened.
[ var. asiatica Wille ]: 4.5-6 μm long, 10-12 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).
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Oscillatoria
O. tenuis
v. tenuis
4-6 x 10 μm
L/W=0.4-0.6
Yukawa-numa
Nishiwaga
Iwate, 2007
Oscillatoria tenuis
O. tenuis
var. tenuis
2.5-3.5 x 10 μm
L/W=0.25-0.35
Saitama, 2000
Oscillatoria
O. tenuis
var. tenuis
2.5 x 8.5 μm
L/W=0.3
rice field
Ichinoseki
Iwate, 2005
Oscillatoria
O. tenuis
var. tenuis
7 μm φ
L/W=0.36
Japan, 199?
Oscillatoria
O. tenuis
var. tenuis
3 x 7 μm φ
Kitamoto n.o.p.
Kitamoto
Saitama, 2006
Oscillatoria
O. tenuis
v. asiatica
5.5 x 14 μm
L/W=0.4
Sakitama-kofun p.
Gyoda
Saitama, 2004
Oscillatoria
O. tenuis
v. asiatica
5-10 x 12 μm
L/W=0.4-0.8
near Mihashi Park
Saitama
Saitama, 2006
Oscillatoria
O. tenuis
v. asiatica
3.5-7 x 12.5 μm
L/W=0.3-0.6
near Iroha-numa
Zao Mt.
Yamagata, 2006
Oscillatoria
O. tenuis
var. tergestina ?
or O. hamelii ?
5.5 μm φ
L/W=0.13-1.1
Japan, 1999

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