Description from Flora of China
Rosa platyacantha Schrenk var. kokanica Regel, Trudy Imp. S.-Peterburgsk. Bot. Sada 5: 313. 1878; R. platyacantha var. variabilis Regel; R. xanthina Lindley var. kokanica (Regel) Boulenger.
Shrubs small, 1.5–2 m tall. Branchlets spreading, straight, rough; prickles dense, straight, fine, firm, flat, tapering to an elliptic base, intermixed with glandular hairs on young branches. Leaves including petiole 4.5–8 cm; stipules mostly adnate to petiole, free parts ovate, margin serrate and glandular; rachis and petiole with short bristles, glandular; leaflets 5–7(–9), ovate, elliptic, or obovate, 1–2.2 × 0.6–1.3 cm, abaxially glandular or sparsely pubescent, with prominent midvein, adaxially glabrous or subglabrous, base broadly cuneate or subrounded, margin acutely doubly serrate, teeth often glandular apically, rounded-obtuse, rarely acute. Flower solitary, axillary, 2–4(–6) cm in diam.; pedicel 1.5–3 cm, glandular or not, glabrous; bracts absent. Hypanthium subglobose, abaxially glandular hispid, with short prickles, or glabrous. Sepals 5, lanceolate, abaxially glandular or not, adaxially sparsely puberulous, irregularly 2- or 3-pinnately lobed, apex long acuminate. Petals 5, pale yellow or white, broadly obovate, apex emarginate. Styles free, much shorter than stamens, slightly exserted, densely pubescent. Hip dark purple or dark brown, subglobose, ca. 1 cm in diam., with persistent, spreading or erect sepals; pedicel 1.5–3 cm, glandular hispid, with short prickles or glabrous. Fl. May–Jul, fr. Aug–Nov.
Slopes at forest margins, an important species in Larix forests; 1500--2500 m. Xinjiang [Afghanistan, Kazakhstan, Mongolia; SW Asia (Iran)].
Slopes at forest margins, an important species in Larix forests