Rosa sericea ssp. omeiensis f. pteracantha
Common name: Wingthorn rose
Rosa sericea ssp. omeiensis f. pteracantha is a large shrub rose growing in the south camellia bed; in mid-summer, its enormous translucent prickles look like rubies when back lit by the sun. R. omeiensis (sometimes treated as a subspecies of R. sericea) is the only rose with four petals.
Stem photo: Lokal_Profil [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0
Flower photo: Krzysztof Golik [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0
Prickles photo by Midge Oke