Figure 1

The maximum likelihood tree based on the whole chloroplast sequences (139,334 bp after alignment) with the GTR + G + I model. The log likelihood value was − 201192.1681. The numbers on branches were bootstrap values from 100 replications. The bootstrap values of the branches without any number were 100, and asterisks represented bootstrap values lower than 50. **: The samples sourced from NCBI GenBank.