Fig. 4: Genetic structure and diversity among Hawaiian mints and relatives.
From: Allopolyploid origin and diversification of the Hawaiian endemic mints
a Principal component analysis (PCA) of dataset DS4c (Stachys byzantina excluded). The insert shows a PCA plot of Stenogyne (purple) and Phyllostegia (green) with dotted lines connecting them to the phylogenetic tree based on SNP data. b Singletons and doubletons (homozygous sites for a unique SNP) and (c) Heterozygosity based on SNP dataset DS7 (Supplementary Data 6). Individuals for each Hawaiian genus, respectively, and representatives of the same Stachys species were combined. Box plots depict the median (center line), the mean (cross), and the upper and lower quartile box limits (whiskers are the first and third quartiles). Number of individuals (N) are shown below the X-axis. Source data are provided as a Source Data file.
