Rosaceae | Rosa
2. Rosa spinosissima Linnaeus; Sp. Pl. 1: 491. 1753.
???? mi ci qiang wei
Shrubs low; ca. 1 m tall. Branches spreading or curved; glabrous; branchlets of present year purple-brown or red-brown; prickles dense to sparse; terete; straight or slightly curved; to 4 mm; fine; bristlelike; abruptly broadening at base; intermixed with smaller bristles. Leaves including petiole 4–8 cm; stipules mostly adnate to petiole; free part ovate; margin entire or serrate; teeth often glandular apically; rachis and petiole sparsely prickly and glandular-pubescent; leaflets (5–)7–9(–11); oblong; oblong-ovate; or suborbicular; 1–2.2 x 0.6–1.2 cm; glabrous; base rounded or broadly cuneate; margin simply serrate or partly doubly serrate; teeth glandular apically when young; apex rounded-obtuse or acute. Flowers solitary; or 2 or 3 and fasciculate; axillary; 2–6 cm in diam.; pedicel 1.5–3.5 cm; sparsely pubescent or glabrescent; glandular-pubescent or not; bracts absent. Hypanthium subglobose; glabrous. Sepals lanceolate; abaxially glabrous; adaxially pubescent; margin entire; apex acuminate or caudate-acuminate. Petals 5; white; pink; or yellowish; broadly obovate; base broadly cuneate; apex emarginate. Styles free; much shorter than stamens; pubescent. Hip black or dark brown; subglobose; 1–1.6 cm in diam.; glabrous; shiny; with persistent sepals; pedicel to 4 cm; often glandular. Fl. May–Jun; fr. Oct–Sep.
Scrub in forests; grassy slopes; river sides; 1100--2300 m. Xinjiang [Russia (Siberia); C and SW Asia; Europe].