| Summary: | In the present study, the complete mitochondrial genomes of five <i>Peltigera</i> species (<i>Peltigera elisabethae</i>, <i>Peltigera neocanina</i>, <i>Peltigera canina</i>, <i>Peltigera ponojensis</i>, <i>Peltigera neckeri</i>) were sequenced, assembled and compared with relative species. The five mitogenomes were all composed of circular DNA molecules, and their ranged from 58,132 bp to 69,325 bp. The mitochondrial genomes of the five <i>Peltigera</i> species contain 15 protein-coding genes (PCGs), 2 rRNAs, 26–27 tRNAs and an unidentified open reading frame (ORF). The PCG length, AT skew and GC skew varied among the 15 PCGs in the five mitogenomes. Among the 15 PCGs, <i>cox2</i> had the least K2P genetic distance, indicating that the gene was highly conserved. The synteny analysis revealed that the coding regions were highly conserved in the <i>Peltigera</i> mitochondrial genomes, but gene rearrangement occurred in the intergenic regions. The phylogenetic analysis based on the 14 PCGs showed that the 11 <i>Peltigera</i> species formed well-supported topologies, indicating that the protein-coding genes in the mitochondrial genome may be used as a reliable molecular tool in the study of the phylogenetic relationship of <i>Peltigera</i>.
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