Relatives
Rosa davurica Pall. - Daurian Rose.
Taxonomic position.
Family Rosaceae Juss. genus Rosa L.Morphology and biology.
Deciduous shrub up to 1.5 m tall with slender straight branches. Old shoots dark brown, young ones reddish-brown. Shoots bear scarce, slightly bent prickles most often located in pairs at leaf base. Leaves alternate, compound, imparipinnate, 4-8 cm long, 5-7(9) leaflets. Leaflets 1.5-5 cm long, oblong-elliptic, finely serrate at margins, above subglabrous, beneath covered with point glandules, pubescent throughout surface or along veins. Petioles often glandular-hairy. Flowers in 1-4(5), on glabrous or more often glandular-hairy pedicels, on branch apices. Sepals with entire margin, glabrous to glandular-hairy on outer surface, 1-3 cm long, with large lateral appendages. Corolla dark pink, 3-5 cm diameter. Fruit is a multinutlet within accrescent hypanthium, which becomes fleshy to form a skin of false "fruit". Hypanthia 10-15 mm long, red, with glaucous bloom, globose, glabrous to glandular-hairy, with persistent sepals.Entomophilous, ornitho- and zoochore. Propagates by seeds and summer cuttings. Flowers in June, mature fruits in August - September. 2n=14.
Distribution.
East Siberia (basin of the upper and middle courses of the Lena River, Transbaikal area, Eastern Sayan, solitary localities in the Angara River basin); Far East (Amur area, Primorie Territory, southern coast of the Sea of Okhotsk); Mongolia (north), China (north), Korea, Japan.Ecology.
Mesoxerophyte, drought-resistant. Relatively shade-resistant. Occurs solitary, more often in small groups, sometimes forms thickets on exposed mountain slopes and in river valleys in thinned deciduous forests, occurs in undergrowth of light broad-leaved forests. In mountains it reaches 1,900 m a.s.l.Use and economic value.
Food, melliferous, medicine, ornamental. Recommended for solitary or clump planting on slopes and in rock gardens.References:
Koropachinskiy IYu., Vstovskaya TN. 2002. Woody plants of the Asian part of Russia. Novosibirsk: Publishing House of Siberian Division of the Russian Academy of Science, Branch "Geo". P.355-356. (In Russian).Sokolov SI., Svjaseva OA., Kubli VA. 1980. Ranges of trees and shrubs of the USSR. V.2. Leningrad: Nauka. P.90. (In Russian).
Yuzepchuk SV. 1941. Rose (wild rose) - Rosa L. In: Shishkin BK., Yuzepchuk SV. eds. Flora URSS. V.10. Moscow; Leningrad. P.431-506. (In Russian).