Scrambling robust shrub; primocanes arching, purple or reddish, sharply angled and flat between, with numerous subsessile glands and moderately clothed in simple and stellate hairs; armature of many to numerous, stout, erect to slightly falcate prickles mostly on angles but often also on faces. Young stems moderately to densely hairy and glandular. Leaflets 5, sparsely pilose to almost glabrous on upper surface, sparsely pilose on veins and lacking tomentum on lower surface, serrate-dentate; terminal leaflet lamina broad-obovate, acuminate, 60-110 × 45-85, with petiolule c. ?-1/2 length of lamina. Stipules linear to linear-lanceolate. Infl. densely hairy, with subsessile glands. Sepals acuminate to long-acuminate, tomentose and with longer simple hairs, usually with pricklets. Petals rounded, smooth to slightly crinkled, white to very pale pink. Anthers hairy.