42. Rosa persetosa Rolfe, Bull. Misc. Inform. Kew. 1913: 263. 1913.
全针蔷薇 quan zhen qiang wei
Rosa elegantula Rolfe.
Shrubs ca. 1.5 m tall. Branches numerous; branchlets waxy farinose; prickles sparse, straight or slightly curved, flat, densely bristly, densely bristly, or sparsely prickly; prickles straight or slightly curved, flat, sometimes turgid at base. Leaves including petiole 5–10 cm; stipules mostly adnate to petiole, free parts narrowly oblong, margin entire, apex rounded-obtuse; rachis and petiole sparsely puberulous, glandular-pubescent, shortly prickly; leaflets 7–9, rarely 11, elliptic or ovate-elliptic, 1.2–3 × 0.6–1.7 cm, glabrous or abaxially sparsely pubescent, with prominent midvein and lateral veins, base subrounded or broadly cuneate, margin simply serrate or inconspicuously doubly serrate, apex rounded-obtuse or acute. Flowers several in corymb, rarely solitary, 2.5–3 cm in diam.; pedicel 1.2–3 cm, glabrous; bracts 3–5, ovate, margin entire or glandular serrate, apex caudate. Hypanthium ovoid, glabrous. Sepals 5, ovate-lanceolate, abaxially subglabrous, glandular or not, adaxially densely puberulous, margin entire, apex caudate. Petals 5, red, broadly obovate, base broadly cuneate, apex rounded-obtuse. Styles free, shorter than stamens, puberulous. Hip bright-red, ovoid, 1–1.5 cm, glabrous, with persistent sepals. Fl. May–Jun, fr. Jul–Oct.
Scrub; 1300--2800 m. Sichuan.
One of us (Robertson) has seen no specimens of this species.