Abstract
The complete chloroplast (cp) genome sequence of Petasites japonicus (Asteraceae) was determined. The cp genome is 150,445 bp and consists of a large single-copy region (82,910 bp), a small single-copy region (17,907 bp), and a pair of inverted repeats (24,814 bp). It encodes a set of 114 genes, consisting of 80 protein-coding genes, 30 tRNA genes, and four rRNA genes. Phylogenetic inference confirmed that P. japonicus is sister to the genus Ligularia in the tribe Senecioneae of Asteraceae.