The complete chloroplast genome of Cymbidium dayanum (Orchidaceae)

Cymbidium dayanum, a wild orchid species in the Orchid family (Orchidaceae), is considered highly valuable because of its long flowering period and beautiful plant shape. We sequenced the complete chloroplast genome of C. dayanum using the Illumina Hiseq platform (Illumina, San Diego, CA). The size of the C. dayanum chloroplast genome is 155,408 bp, with an average GC content of 36.76%. This chloroplast genome has containing a large single-copy (LSC) region of 84,189 bp, a small single-copy (SSC) region of 17,991 bp, and two inverted (IRa and IRb) repeat regions of two 26,614 bp. A total of 118 unique genes were annotated, including 76 protein-coding genes, 38 tRNA genes, and 4 rRNA genes. A maximum-likelihood phylogenetic tree indicated that C. dayanum is closely related to C. tracyanum in the genus Cymbidium based on 9 whole chloroplast genome sequences.