Complete chloroplast genome of Campsis grandiflora (Thunb.) schum and systematic and comparative analysis within the family Bignoniaceae.

The chloroplast genomes were used for molecular marker, species identification, and phylogenetic studies. The outcome strongly supported that C. grandiflora and genus Incarvillea formed a cluster within Bignoniaceae. This study identified the unique characteristics of the C. grandiflora cp. genome, thus providing theoretical basis for species identification and biological research.