Characterization of the complete plastid genome and phylogenetic implication of <i>Micranthes octopetala</i> (Nakai) Y.I.Kim &amp; Y.D.Kim (Saxifragaceae), endemic to Korea

<i>Micranthes octopetala</i> (Nakai) Y.I.Kim &amp; Y.D. Kim et al. 2015, which belongs to the family Saxifragaceae, is a perennial herb endemic to Korea. <i>M. octopetala</i> was originally treated as a synonym of <i>M. manchuriensis</i>. However, in 2015, molecular phylogenetic analysis confirmed that <i>M. octopetala</i> is an independent species. In this study, the plastid genome of <i>M. octopetala</i> was sequenced for the first time, and the taxonomic position of this species was identified. The complete plastid genome of <i>M. octopetala</i> has a total length of 149 751 bp (large single copy: 83 083 bp; small single copy: 17 196 bp; inverted repeat: 24 736 bp), containing 130 genes, including 79 CDS, 30 tRNAs, and 4 rRNAs. Moreover, the absence of intron in the <i>rpl</i>2 gene, which is a common feature of Saxifragaceae, was confirmed. Phylogenetic analysis based on 79 protein-coding genes from 21 species revealed that <i>M. octopetala</i> belongs to the genus <i>Micranthes,</i> being a sister to other <i>Micranthes</i> species. The plastid genome of <i>M. octopetala</i> obtained in this study provides fundamental information for future studies on the genus <i>Micranthes</i>.