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

## TL;DR

This paper reports the complete chloroplast genome of Pterospermum heterophyllum and its phylogenetic relationships with related species.

## Contribution

The study provides a new chloroplast genome sequence and phylogenetic insights for Pterospermum heterophyllum.

## Key findings

- The chloroplast genome is 162,857 bp with typical quadripartite structure and 130 annotated genes.
- The infA gene has a large 3′ deletion truncating its coding sequence.
- Phylogenetic analysis shows P. heterophyllum is closely related to P. kingtungense and P. truncatolobatum.

## Abstract

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.