Geographic distribution and frequencies of chloroplast haplotypes in wild Scutellaria baicalensis and Scutellaria rehderiana (WYW) (a) and cultivated Scutellaria baicalensis (b) populations. Population abbreviations are the same as Table 1. The pie sizes of populations are proportional to their sample sizes.
Yuan et al. BMC Genetics 2010 11:29 doi:10.1186/1471-2156-11-29