Article (misc)  (2007)  Page(s) 352.  
 
Table 1.The new species of Rosa (Rosaceae) in China reported recently...
R. biflora Chinese name: Shuanghua Qiangwei
Like R. saturata, but two flowers in a cluster, peduncle shorter, on more than 1 cm.

Book  (1 May 2003)  
 
Rosa sinobiflora T. C. Ku 双花蔷薇 shuang hua qiang wei
Replaced synonym: Rosa biflora T. C. Ku, Bull. Bot. Res., Harbin 10(1): 3. 1990, not Aublet (1775), nor Krocker (1790).
Shrubs small, ca. 2 m tall. Branchlets red-brown, terete, slender, glabrous; prickles subulate. ...stipules hooked, large and broad...both surfaces glabrous, margin densely stipitate glandular...leaflets 7–9, yellow-green abaxially, deep green adaxial... Flowers 2 ... pedicel short,...Petals unknown. ...Hip red-brown, obovoid or subglobose, 1–1.2 cm in diam., glabrous; with persistent sepals. Fruit Aug–Oct..... NW Yunnan