[i] For protein-coding genes the synonymous divergence (d_S), its standard error (SE), and the nonsynonymous-to-synonymous ratio (d_N/d_S, also called ω) are shown. For intergenic regions, divergence (K) was calculated using Kimura's two-parameter method. NA, Not applicable (gene not present); ND, not determined.

[ii] ^aAverage number of sites compared across the reported species pairs. The ycf4, accD, cemA, and rbcL comparisons are all not full-length. For ycf4, only the relatively conserved section between position 164 in Figure 2 and the C terminus was compared.

[iii] ^bSequence data from Kenicer et al. (2005).