The complete chloroplast genome and phylogenetic analysis of Pterospermum heterophyllum (Malvaceae).

Pterospermum heterophyllum Hance (1868), a member of the Malvaceae family, is widely distributed across southwestern and southeastern China and has been traditionally used in folk medicine to treat rheumatoid arthritis and inflammation-related diseases. The circular genome is 162,857 bp long and exhibits a typical quadripartite structure, consisting of an LSC (91,356 bp), SSC (20,567 bp), and two IRs (25,467 bp each). A total of 130 genes were annotated. The multiple sequence alignment revealed that infA gene contained a large 3' deletion truncating the coding sequence. Phylogenetic analysis revealed that P. heterophyllum is closely related to P. kingtungense and P. truncatolobatum.