The complete chloroplast genome and phylogenetic analysis of subsp (Craib) T. C. Chen 1988.

subsp. (Craib) T. C. Chen 1988, a member of the family, subfamily, and genus, has a rich history of traditional usage in Chinese medicine. Renowned for its analgesic properties, it is commonly employed for managing inflammation and pain. This study aimed to sequence the complete chloroplast genome of subsp. using Illumina paired-end sequencing data. The chloroplast genome spans 156,967 bp and consists of four main regions: the large single-copy (LSC) region (89,185 bp), the small single-copy (SSC) region (19,146 bp), and a pair of inverted repeats (IRs) (24,318 bp). The overall GC content of the chloroplast genome is 36.19%, with specific values of 33.99%, 29.79%, and 42.76% for the LSC, SSC, and IR regions, respectively. A total of 128 genes were annotated in the chloroplast genome, including 83 protein-coding genes, 37 tRNA genes, and eight rRNA genes. Phylogenetic analysis revealed that subsp. is closely related to , indicating a sister taxon relationship between the two species. This study significantly contributes to the chloroplast genomic resource for , laying the groundwork for future phylogenetic investigations within the genus.