The complete chloroplast genome sequence of <i>Cathetus clarkei</i> Hook.f.1890 R.W.Bouman, 2022 (Phyllanthaceae)

<i>Cathetus clarkei</i>, a significant folk medicinal plant, is utilized to treat a variety of ailments. In this study, we reported the complete chloroplast genome sequence of this species. The length of the complete chloroplast genome was 155,810 bp, included a pair of inverted repeat (IR) regions (26,340 bp), a large single-copy region (LSC, 84,853 bp), and a small single-copy region (SSC, 18,277 bp). It comprised 128 genes, including 83 protein-coding genes, 37 tRNA genes, and eight rRNA genes. The total GC content was 36.8%. The phylogenetic tree revealed that <i>C. clarkei</i> had a close relationship with <i>P. cochinchinensis</i>, followed by <i>P. reticulatus</i>. This study provides a reference for important medicinal plants within the Phyllanthaceae, and we can gain a deeper understanding of how the species adapts to changes in the environment, helping us to identify and protect it.