The chloroplast genome of Ostericum citriodorum (Apiaceae), an endemic medicinal plant to China.

Ostericum citriodorum is a traditional Chinese medicinal herb endemic to Southeast and South China, but now is becoming very rare because of rapid habit loss. The complete chloroplast genome of O. citriodorum was sequenced herein and suggested that the complete chloroplast genome was 155,919 bp in length, comprising the large single-copy (LSC) region of 85,393 bp, the small single-copy (SSC) region of 19,760 bp, and a pair of inverted regions (IRs) of 25,383 bp. Totally 127 genes were distributed in the whole genome, including 4 rRNAs, 37 tRNAs, and 81 protein coding genes. The G + C content of this chloroplast genome was 38%. Phylogenetic inference revealed that O. citriodorum was accompanied with Pterygopleurum neurophyllum and sister to O. palustre, indicating a close relationship between Ostericum and Pterygopleurum.