Fig. 3.—

Phylogeny of the Pteridaceae and losses of the atp1i361g2 intron. The phylogram shown is an expanded view of the clade collapsed in figure 2. Shading highlights species investigated for the atp1 locus, indicating the presence (blue) or absence (red) of the atp1i361g2 intron. We could show that atp1i361g2 is absent in the AD/CH clade, the Ceraptopteridoids, Actiniopteris dimorpha, Onychium and Pteris argyraea and P. biaurita. According to this phylogeny, atp1i361g2 was lost at least 4 times in the Pteridaceae.