Bayesian tree of the concatenated plastid data of matK, trnL-F and psbA-trnH sequences, showing genera in subtribes Caraganinae, Chesneyinae and their close relatives. The labeled sections of Gueldenstaedtia and Tibetia followed Tsui (1979) and Zhu (2005a), respectively. Bayesian posterior probabilities (PP ≥ 0.95) and maximum likelihood bootstrap (LBS ≥ 70%) are given above and below branches, respectively. The asterisk indicates the type species of Chesneya.