Often lumped with Dicentra (in this case, as Dicentra scandens), the genus Dactylicapnos has recently been reasserted as taxonomically valid. According to the Flora of China, Dactylicapnos is a group of scandent (vine-like) herbaceous annuals and perennials, containing twelve species from the western Himalayas to China. Dactylicapnos scandens is distributed widely throughout the region, occurring from northwest India to northern Thailand, and reaching southern China.
If you are fortunate enough to have access, you can read an excellent account of Dactylicapnos scandens in Curtis’s Botanical Magazine (complete with illustrations). If not, you can investigate some briefer accounts of the species in gardens via The Hegarty Webber Partnership weblog: “The Charms of a Chain Bracelet” or Paghat. Visiting UBC Botanical Garden? You can see this species near the entrance to the Asian garden, growing along Upper Asian Way (just past the first major intersection of paths).