Figures & data
Figure 1. Phylogenetic tree based on chloroplast genomes using the ML method. Ultrafast bootstrap values are shown above the nodes, with 1000 bootstrap replicates. The chloroplast genome sequences of 31 individuals of 30 species except for Betula hainanensis were downloaded from the NCBI GenBank database (https://www.ncbi.nlm.nih.gov).
Data availability
The data that support the findings of this study are openly available in NCBI GenBank database at (https://www.ncbi.nlm.nih.gov) with the accession number is MT013361, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.