WEBPaeonia suffruticosa (originally Paeonia Moutan Sims) by Abraham Jacobus Wendel, 1868. Paeonia × suffruticosa is a name used for a group of cultivars of tree peonies that are the result of hybridisation with species exclusively belonging to the subsection Vaginatae. The common name used in China is mǔdān ( Chinese: 牡丹 ).