Fig. 1

Geographical distributions and population structure of Pseudotaxus chienii. Colors denote the four main groups. a Sampling locations. Populations refer to those in Table 1. Colors denote the four main groups recovered from principal component analysis (PCA) and phylogenetic analysis. The map was downloaded from the National Geomatics Center of China (http://www.ngcc.cn/) and constructed using the ArcGIS ver. 10.4.1 (http://www.esri.com/software/arcgis/arcgis-for-desktop). b PCA of the 108 individuals based on the first two principal components. c A maximum likelihood (ML) tree based on SNPs from the transcriptome data