Map of the chloroplast genome of Asclepias syriaca. The thick black lines indicate the locations of the inverted repeats (IR). The thin black lines indicate the locations of the large single copy (LSC) and small single copy (SSC) regions. Transcription is clockwise for genes on the outside of the circle and counterclockwise for genes on the inside of the circle. Asterisks denote the locations of unresolved sequence due to polynucleotide stretches.
Straub et al. BMC Genomics 2011 12:211 doi:10.1186/1471-2164-12-211