Phylogenetic relationship and characterization of the complete chloroplast genome of subsp. Maximowicz 1877, an ornamental and medicinal plant in China.

As one of the top 10 famous flowers in Chinese tradition, subsp. known as 'beauty in flowers,' which has high ornamental and medicinal value. The complete chloroplast (cp) genome of subsp. was determined in this study. The complete chloroplast genome of subsp. was 201,233 bp in length and contained a large single-copy region (LSC, 108,077 bp), and a small single-copy region (SSC, 2624 bp) and a pair of inverted repeat regions (IRa and IRb, 45,266 bp). A total of 142 functional genes were observed in this cp genome, including 91 protein-coding genes (PCGs), 43 transfer RNA genes (tRNAs), and eight ribosomal RNA genes (rRNAs). The subsp. cp genome has an A + T content of 64.06% and presents a positive AT-skew (0.53%) and a negative GC-skew (-1.56%). The maximum likelihood phylogenetic analysis based on the concatenated nucleotide sequences of 13 PCGs strongly supported the monophyletic relationship of the clade of subsp. . This study provides genomic evidence for the vegetation classification of .