Figure 2 Phylogenetic position of Asplenium brasiliense and A. douglasii based on four plastid markers (atpB, rbcL, rps4 and rps4–trnS, and trnL and trnL–trnF). The numbers associated with the branches indicate maximum likelihood bootstrap support (MLBS) and Bayesian inference posterior probability (BIPP). Only MLBS ≥ 80 and BIPP ≥ 0.85 are shown. An asterisk indicates MLBS = 100 and BIPP = 1.00. A dash (–) indicates that the support value is below the threshold and is therefore not shown. Morphological character codes at the tips of the tree are as follows: 1. Degree of lamina division (blank = simple or nearly simple; gray = shallowly lobed; black = clearly pinnate); 2. Overall lamina shape (blank = strap-shaped or tongue-shaped; gray = oblong or ovate; black = lanceolate); 3. Petiole-to-lamina length ratio (blank = shorter than the lamina; gray = approximately equal to the lamina; black = longer than the lamina); 4. Venation type (blank = free; gray = nearly free; black = clearly reticulate); 5. Sorus shape (blank = short linear; gray = linear; black = extremely narrow and elongated); 6. Sorus length relative to the leaf vein (blank = shorter than the vein; gray = equal to the vein; black = nearly the full length); 7. Relative development of basal auricles (near the base of the rachis) vs. apical auricles (near the leaf tip) (blank = absent; gray = occasional; black = common).