New combinations in Phedimus (Crassulaceae)

During the preparation of the account of the Crassulaceae for the Flora of China, Volume 8, it was decided that Phedimus Rafinesque should be separate d from Sedum L. It is therefore necessary to publish new combinations in Ph edimus for three varieties and one species previously recognized in Sedum: P. aizoon (L.) 't Hart var. latifolius (Maximowicz) H. Ohba, K. T. Fu & B. M. Bartholomew, comb. nov., P. aizoon, var. scabrus (Maximowicz) H. Ohba, K . T. Fu & B. M. Bartholomew, comb. nov., P. aizoon var. yamatutae (Kitagawa ) H. Ohba, K. T. Fu & B. M. Bartholomew, comb. nov., and T! hsinganicus (Y. C. Chu ex T. N. Liou) H. Ohba, K. T. Fu & B. M. Bartholomew, comb. nov. On e subgeneric name, Phedimus subg. Aizoon (L. K. A. Koch ex Schonland) H. Oh ba & Turland, is validated; it was first proposed by 't Hart but with an er roneous (and uncorrectable) basionym citation. The name Sedum aizoon. L. va r. scabrum Maximowicz is lectotypified.