Complete plastid genome and phylogenetic analysis of Hypericum wightianum (Hypericaceae)

Hypericum wightianum is a medicinal plant (section Monanthema) . In this study, we assembled, annotated and characterized the complete plastid genome of H. wightianum. The plastome is 137,760 bp in length and exhibits a standard quadripartite layout. In total, 119 genes were identified, comprising 35 tRNAs, 8 rRNAs, 3 pseudogenes, and 73 protein-coding genes with biased synonymous codon usage. Phylogenetic inference indicated that H. wightianum and H. petiolulatum form a well-supported sister clade, suggesting a close evolutionary relationship between sections Monanthema and Elodeoida. This data provide critical resources for species delimitation and evolutionary studies within the genus Hypericum.