Rosa omeiensis
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| Rosa omeiensis | ||||||||||||||||
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 Rosa omeiensis f. pteracantha
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| Rosa omeiensis Rolfe |
Rosa omeiensis is a species of Rosa native to central and southwestern China in the provinces of Gansu, Guizhou, Hubei, Ningxia, Qinghai, Shaanxi, Sichuan, Xizang, and Yunnan; it grows in mountains at altitudes of 700 to 4,400 m.
It is a shrub growing to 4 m tall, often very spiny. The leaves are deciduous, 3-6 cm long, with 5-13 leaflets with a serrated margin. The flowers are 2.5-3.5 cm diameter, white, with (unusually for a rose) only four petals. The hips are red to orange-yellow, 8-15 mm diameter, with persistent sepals, and often bristly.
There are four formae:
- Rosa omeiensis f. omeiensis.
- Rosa omeiensis f. glandulosa T.T.Yü & T.C.Ku.
- Rosa omeiensis f. paucijuga T.T.Yü & T.C.Ku.
- Rosa omeiensis f. pteracantha Rehder & E.H.Wilson.
It is sometimes treated as a subspecies of the closely related species Rosa sericea.
[edit] Cultivation and uses
R. omeiensis f. pteracantha is grown as an ornamental plant for its large, bright red thorns.
