The complete chloroplast genome and phylogenetic analysis of <i>Guilandina minax</i> (Hance) G. P. Lewis (Fabaceae)

<i>Guilandina minax</i> (Hance) G. P. Lewis, commonly known as 'Whiteflower Cacalia', is a traditional medicinal plant extensively utilized by the Zhuang, Yao, and Dai ethnic minority groups. In this study, we sequenced and characterized the complete chloroplast genome of <i>G. minax</i>, and conducted a phylogenetic analysis to elucidate its evolutionary relationships within the Fabaceae. The chloroplast genome of <i>G. minax</i> was found to be 156,769 bp in length, with an overall GC content of 37.20%. It exhibited the typical quadripartite structure comprising a large single-copy (LSC) region of 85,264 bp, a small single-copy (SSC) region of 15,543 bp, and a pair of inverted repeat (IR) regions, each measuring 27,981 bp. A total of 127 genes were annotated from the chloroplast genome of <i>G. minax</i>, including 82 protein-coding genes, 37 transfer RNA (tRNA) genes, and 8 ribosomal RNA (rRNA) genes. A maximum-likelihood (ML) phylogenetic analysis based on the complete chloroplast genomes of <i>G. minax</i> along with 28 species from the Fabaceae family and 2 outgroup taxa indicated that <i>G. minax</i> is most closely related to <i>Guilandina bonduc</i>. This study provides valuable genomic resources for <i>G. minax</i> and contributes to a more resolved understanding of phylogenetic relationships within the Fabaceae.