Abstract
Mimosa diplotricha (Fabaceae) and Mimosa diplotricha var. inermis are invasive taxa introduced in the Chinese mainland in the 19th century. M. diplotricha has been listed in the list of highly invasive species in China, which has seriously endangered the growth and reproduction of local species. As a poisonous plant, M. diplotricha var. inermis, a variant of M. diplotricha, will also endanger the safety of animals. We report the complete chloroplast genome sequence of M. diplotricha and M. diplotricha var. inermis. The chloroplast genome of M. diplotricha is 164,450 bp long and the chloroplast genome of M. diplotricha var. inermis is 164,445 bp long. Both M. diplotricha and M. diplotricha var. inermis contain a large single-copy region (LSC) of 89,807 bp and a small single-copy (SSC) region of 18,728 bp. The overall GC content of the two species is both 37.45%. A total of 84 genes were annotated in the two species, namely 54 protein-coding genes, 29 tRNA genes, and one rRNA gene. The phylogenetic tree based on the chloroplast genome of 22 related species showed that Mimosa diplotricha var. inermis is most closely related to M. diplotricha, while the latter clade is sister to Mimosa pudica, Parkia javanica, Faidherbia albida, and Acacia puncticulata. Our data provide a theoretical basis for the molecular identification, genetic relationships, and invasion risk monitoring of M. diplotricha and M. diplotricha var. inermis.