Phylogenetic status of Oreophysa microphylla (Fabaceae - Galegeae) based on nrDNA (ITS region) ad cpDNA (trnL intron/trnl trnF intergenic spacer) Sequences

This study represents molecular phylogenetic status of the monotypic genus Oreophysa on the basis of nuclear ribosomal DNA internal transcribed spacers and 5.8S region sequences (nrDNA ITS) and the cpDNA trnL intron and trnL-trnF intergenic spacer sequences (cpDNA trnL-F) for the first time. A total of 23 and 21 ingroup taxa and two Caragana species as outgroups, all belonging to the tribe Galegeae, were analyzed for nrDNA ITS and cpDNA trnL/F sequences, respectively. The results of phylogenetic analyses of each dataset separately and in combination, using maximum parsimony method, revealed that Oreophysa microphylla is a member of Coluteoid clade and in turn nested among two/three sampled Colutea species as allied with C. persica. Based on these data, Oreophysa microphylla was synonymized with Colutea (sect. Oreophysa) triphylla.