Fig. 1

Phylogram of Polypodiales suborder Dennstaedtiineae based on complete chloroplast genome sequences. Tree topology with branch length indicated was based on maximum likelihood (ML) analysis using the GTR + H4 model. The names of major nodes are indicated. Support values indicated were from ML analyses using the GTR + H4, and Bayesian inference (BI) analysis using the GTR + I + G model. Support values, including bootstrap support values (BS) and Bayesian confidence values (PP), are indicated along the branches unless all BS and PP are 100% or 1.0