Book (1 May 2003)
Rosa derongensis T. C. Ku, Bull. Bot. Res., Harbin. 10(1): 7. 1990.
得荣蔷薇 de rong qiang wei
Shrubs small.
Branchlets purple-brown or red-brown, terete, curved, glabrous; prickles often yellowish or gray-brown, straight or slightly curved, robust, inflated at base.
Leaves including petiole 2.5–3.2 cm; stipules mostly adnate into petiole, free parts shortly triangular or ovate, glabrous, margin glandular serrate, rachis and petioles glabrous, sparsely glandular-pubescent and with small, curved prickles; leaflets 5, rarely 7, yellow-green abaxially, deep green adaxially, obovate, 9–15 × 6–10 mm, both surfaces glabrous, base cuneate or subrounded, margin sharply serrate, apex rounded.
Flowers 2 or 3 and fasciculate, rarely solitary; bracts caducous, unknown. Hypanthium ovoid.
Sepals 5, lanceolate or ovate-lanceolate, 7–9 mm, abaxially pubescent and glandular-pubescent, adaxially tomentose-pubescent, margin with 1 or 2 pairs of lobes, apex acuminate, after anthesis reflexed.
Petals unknown.
Style connate in column, exserted, slightly shorter than stamen, glabrous.
Hip red-brown, subglobose or obovoid, ca. 8 mm in diam., sparsely glandular. Hip unknown.
About 2100 m. W Sichuan (Dêrong Xian).
