Rubus ovatisepalus (Rosaceae), a New Species from Yunnan and Xizang, Southwest China

Rubus ovatisepalus Huan C. Wang, a new species of Rosaceae from Yunnan and Xizang, southwest China, is described and illustrated. It is closely related to R. stans, but clearly differs from the latter by its arched main stems, flower-branchlets that are longer than 20 cm, 5–7 cm long and 3.5–5 cm wide terminal leaflets, terminal inflorescences having numerous flowers, racemiform cymes, ovate to triangular-ovate and adaxially tomentose sepals with a long-acuminate to caudate apex, white or light pink petals, and an ovoid to conical gynoecium.