Fig. 1.

Gene maps of three plastomes in Parapteropyrum tibeticum (assembled using Fagopyrum luojishanense as reference plastome), Atraphaxis bracteata (assembled using Fagopyrum luojishanense as reference plastome) and Calligonum ebinuricum (assembled using Rumex acetosa as reference plastome). Genes outside the circle are transcribed clockwise; genes inside are transcribed counterclockwise. Different colors represent different functional groups. The inner circle shows GC content in dashed grey area. LSC, large single copy; IRB, inverted repeat B; SSC small single copy; and IRA, inverted repeat A.