Fig. 3

The relevance between the expansion/contraction of LSC-IRs and the plastome-based phylogeny. a Left side is the phylogenetic framework reconstructed using 69 complete plastome sequences. Right side is the length stacked bar chart of the four constituent regions (LSC, IRb, SSC, and IRa) of plastomes. The blue bars represent LSC regions, green bars represent IRs. (IRb and IRa), and brown bars represent SSC regions. b Right side is the length stacked bar chart of the gene and intergenic regions of plastomes. The black bars represent intergenic regions, and gray bars represent gene regions