Fig. 3. Phylogeny of Paeonia section Paeonia based on ITS sequences. The left portion of the figure represents the strict consensus tree of two equally most parsimonious trees of species of divergent origin in Paeonia generated from variable sites of ITS sequences, and only interspecific relationships of section Paeonia are shown. Numbers'above lines are the number of nucleotide substitutions for a branch followed by the number of transitions and transversions in parentheses. Numbers below branches give percent occurrence of a group in 1000 bootstrap replications. Reticulate evolution is demonstrated by dashed lines in the right portion of the figure. Solid circles indicate connection between two lines. Empty circles indicate that two lines cross but do not connect. Abbreviations of species in section Paeonia are the same as in Table 1.