Maximum-likelihood tree of cpDNA haplotypes of Rhododendron pseudochrysanthum s.l. Numbers at nodes indicate bootstrap values (>50%). Cluster I and II are indicated. Divergent times at nodes were estimated based on BEAST analyses. FH: R. formosanum. HH: R. hyperythrum.PH: R. pseudochrysanthum s.l. Symbols: Alishan Mountain Range (blank circle), Central Mountain Range (black circle), Sheishan Mountain Range (blank square), and Yushan Mountain Range (black square).