Paeonia rockii and Its One New Subspecies from Mt. Taibai, Shaanxi of China
紫斑牡丹及其一新亚种

The history of exploration and classification of Paeonia rockii is reviewed in the present paper. Two allopatric subspecies in this species are recognized. The new subspecies, subsp, taibaishanica Hong, found on northern slope of the Qingling Range has leaflets ovate or rounded, totally or mostly lobed. P. rockii subsp, linyanshanii T. Hong et G. L. Ostiis found to be a superfluous name of P. rockii subsp, rockii.