Rosa oxyacantha M. Bieb.

One of us (Robertson) has seen no specimens of this species.

Shrubs small, 1–2 m tall. Branchlets red-brown, glabrous; prickles numerous, yellowish, straight, unequally long and thick, abruptly tapering to broadened base. Leaves including petiole 4–9 cm; stipules mostly adnate to petiole, free parts lanceolate, margin entire, glandular-pubescent, apex acute; rachis and petiole sparsely shortly prickly, glandular-pubescent; leaflets 7–9, oblong or elliptic, 1.5–2.5 × 0.8–1.7 cm, glabrous, abaxially with prominent veins, base subrounded or broadly cuneate, margin doubly serrate, apex acute or rounded-obtuse. Flowers solitary, rarely 2 or 3 and fasciculate, 2.5–3 cm in diam.; pedicel 1.5–2 cm, glabrous or glandular-pubescent; bracts ovate, margin glandular-pubescent, apex long caudate. Hypanthium ovoid or oblong, glabrous or sparsely stipitate glandular. Sepals 5, lanceolate, leaflike, abaxially densely glandular-pubescent, adaxially densely pubescent, margin entire. Petals 5, pink, obovate, base broadly cuneate, apex emarginate. Styles shorter than stamens, pubescent. Hip bright-red, oblong or ovoid, 1–1.5 cm in diam., glabrous or sparsely stipitate glandular, with persistent, erect sepals. Fl. Jun–Jul, fr. Jul–Sep.

Xinjiang [Mongolia, Russia (Siberia)].

Scrub; 1100--1400 m.

Rosa pimpinellifolia Linnaeus var. subalpina Bunge ex Marschall von Bieberstein.

Rosa oxyacantha là loài thực vật có hoa trong họ Hoa hồng. Loài này được M. Bieb. miêu tả khoa học đầu tiên năm 1819.

尖刺蔷薇（学名：Rosa oxyacantha）为蔷薇科蔷薇属下的一个种。