Fig. 10
Phylogenetic tree, optimized under maximum likelihood (ML), showing unambiguously resolved relationships among extant Osmundaceae and the conflicting root-placement (outgroup-inferred) signals from individual gene regions. Based on the molecular matrix compiled and employed by Metzgar et al. [32]. All backbone branches received full maximum-likelihood bootstrap support (BSML = 100) based on the concatenated data; support for leaf-branches not shown (see Additional file 1 [ESA])