Complete chloroplast genome sequence and phylogenetic analysis of Henry 1913 (Salicaceae Mirb.).

The classification and identification of species in has remained a formidable challenge due to widespread interspecies hybridization. The complete chloroplast genome of was obtained by Illumina high-throughput sequencing technology, with a typical quadripartite structure and 37.0% GC content. The chloroplast genome of was 156,892 in length, including a large single-copy region (LSC: 84,988 bp), a small single-copy region (SSC: 16,630 bp), and a pair of inverted repeats (IRs: each 27,637 bp in length). A total of 131 genes were annotated, including 86 protein-coding genes, 37 tRNAs, and 8 rRNAs. The phylogenetic analysis indicated that 43 species belonging to were classified into monophyly, with being the closest relatives to . In conclusion, this study provides valuable insights into understanding the phylogeny of .