FIGURE 1.

Plastome maps of Tiarella, Heuchera, and Mitella. (A) Seven Tiarella plastomes including four T. polyphylla individuals, two T. cordifolia, and one T. trifoliata, (B) Two Mitella plastomes including M. diphylla and M. formosana (C) Two Heuchera plastomes including H. villosa and H. richardsonii. Genes inside the circle are transcribed clockwise, gene outside are transcribed counter-clockwise. The light gray inner circle corresponds to the AT content, the dark gray to the GC content. Genes belonging to different functional groups are shown in different colors; see the legend for groups.