Spreading shrub; primocanes suberect to somewhat arching, greenish brown, with rounded angles and furrowed between, with numerous subsessile glands and sparsely to moderately clothed in simple hairs; armature of many, stout, erect to slightly deflexed prickles on angles. Young stems densely hairy and glandular. Leaflets 5, almost glabrous to sparsely pilose on upper surface, sparsely to moderately pilose on veins but not tomentose on lower surface, coarsely 1-2-serrate; terminal leaflet lamina ± elliptic, acuminate, 50-100 × 20-50 mm, with petiolule c. ?-1/4 length of lamina. Stipules linear-lanceolate. Infl. moderately to densely hairy, with subsessile glands. Sepals acuminate, moderately pilose but tomentose only on margins and within, without pricklets. Petals rounded, crinkled, white. Anthers glabrous.