Fig. 2.

The IR gene content among Polypodiales ferns. The blue filled and open circles indicate the genes present and absent, respectively, in the corresponding species. The light-grey filled circles denote sequences that were marked as pseudogenes by DOGMA and shaded light-grey – pseudogenes that were not found by DOGMA, only by manual check using BLAST. * – Macrothelypteris torresiana, Thelypteris aurita, Stegnogramma sagittifolia, Cyclosorus procerus, Ampelopteris prolifera; *2 – Homalosorus pycnocarpos, Diplaziopsis javanica, Diplaziopsis cavaleria; *3 – Asplenium prolongatum, Asplenium pekinense, *4 – Woodsia macrochlaena, Woodsia polystichoides; *5 – Conopteris opaca (syn. Athyrium opacum) and all Deparia species of Athyraceae, *6 – Anisocampium sheareri (syn. Athyrium sheareri) and all other Athyrium species of Athyraceae