Complete chloroplast genome sequences of and and comparative analysis of the genus sensu lato (Lamiaceae).

The taxonomic terms "" and "" had been used to describe two sections within the genus belonging to the Lamiaceae family. Recently, phylogenetic analyses using molecular markers showed that and formed two monophyletic clades, and thus they are generally accepted as separate genera. In this study, we assembled the complete chloroplast genome of , which is the first reported chloroplast genome belonging to genus, as well as the complete chloroplast genome of belonging to genus. The results showed that the length of chloroplast genome was 151,639 bp () and 152,432 bp (), with conserved large single copy regions, small single copy regions, and inverted repeat regions. 121 genes in and 120 genes in were annotated. The chloroplast genomes of , , and three reported species, as well as those of 51 species from the Lamiaceae family, which covered 12 subfamilies, were subjected to phylogenetic analyses. The and species were split into two groups, which were well supported by both maximum likelihood and Bayesian inference tree analyses. Our study provided further evidence to recognize and as independent genera.