The complete chloroplast genome of <i>Geum longifolium</i> (Maxim.) Smedmark 2006 (Rosaceae: Colurieae) and its phylogenomic implications

<i>Geum longifolium</i> (Maxim.) Smedmark 2006 belongs to the family Rosaceae, subfamily Rosoideae, tribe Colurieae. <i>Geum longifolium</i> is endemic to China and its whole herb is used in Chinese medicine. Here<i>,</i> the first complete chloroplast (cp) genome of <i>G. longifolium</i> was assembled and annotated based on genome skimming, and its phylogenetic position was investigated using phylogenomic evidence. The cp genome size of <i>G. longifolium</i> was 155,884 bp with the total GC content of 36.7%. Its cp genome presented a typical tetrad structure, composed of a large single copy (LSC) region (85,338 bp), a small single copy (SSC) region (18,358 bp), and a pair of inverted repeat (IR) regions (26,094 bp). The cp genome encoded 129 genes, including 84 protein-coding genes, 37 tRNA genes, and eight rRNA genes. Phylogenetic analysis indicated that <i>G. longifolium</i> was sister to <i>G. elatum</i> Wall. ex G.Don 1832 in current taxa sampling. This study can enrich the chloroplast genomic resource of <i>Geum</i> and lay the foundation for future phylogenetic studies on <i>Geum</i>.