My field work is centered in Colombia, and Papua New Guinea. I am based at the Royal Botanic Garden Edinburgh (E). If you have any ferns that you want identified, please send them to me!
I believe this Dryopteris is D. patula, but it atypical for that species with respect to growth habit (epilithic on a cliff), small size, and color of rhizome scales.
Cyathea divergens var divergens