Table 2.

Analysis of selection pressure based on branch site model in Drynaria.

Gene	Model compared	LRT p value	Positive sites
ccsA	Model A vs.Model A null	0.000000000	159 V 0.581,160 L 0.539,184 E 0.573,191 C 0.513,192 N 0.583,303 S 0.582,306 L 0.567,347 K 0.571,443 S 0.554,456 N 0.581,460 S 0.530
ycf1	Model A vs.Model A null	0.000000000	30 K 0.911,37 T 0.911,103 H 0.909
rpoC2	Model A vs.Model A null	0.000000000	775 D 0.527