The phylogenetic position of Asplenium jiulianshanense K.W.Xu & G.L.Xu based on the low-copy nuclear gene pgiC. The numbers associated with branches are maximum likelihood bootstrap (MLBS) values followed by Bayesian inference posterior probabilities (PP). “*” indicates MLBS = 100% or PP = 1. Black vertical bars indicate those major clades identified by Chang et al. (2018).