Rosa omeiensis
| Rosa omeiensis | |
|---|---|
 | |
| Rosa omeiensis f. pteracantha | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Rosa |
| Species: | R. omeiensis |
| Binomial name | |
| 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.
Cultivation and uses
R. omeiensis f. pteracantha is grown as an ornamental plant for its large, bright red thorns.
R. omeiensis f. pteracantha
Rosa omeiensis f. pteracantha Rehder & E.H.Wilson
Thorns and leaves
References
This article is issued from Wikipedia - version of the 3/15/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.