Project description:Alloteropsis is a widely-distributed genus with C3 and C4 photosynthetic species belonging to the Poaceae family. This study characterized the complete chloroplast genomes of two Alloteropsis species from Chinese mainland, i.e. Alloteropsis semialata with C4 photosynthetic type and Alloteropsis cimicina with C3 photosynthetic type. The chloroplast genomes of A. semialata and A. cimicina are 138,188 bp and 139,335 bp in length, with 38.48% and 38.59% GC contents, respectively. These two chloroplast genomes contain the same number of genes, i.e. 107 unique genes including 27 tRNA, 4 rRNA, and 76 protein-coding genes. Phylogenomic analysis confirmed the species identity of A. semialata and A. cimicina and supported a close relationship of Alloteropsis with species of Setaria and Panicum in grass family.