xCyclobotrya: A new hybrid genus between Cyclodium and Polybotrya (Dryopteridaceae) from the Brazilian Amazon

xCyclobotrya telespirensis, a new hybrid and new hybrid fern genus, is described from the margin of the Teles Pires River in southern Brazilian Amazon. The new nothotaxon is derived from the cross between Polybotrya goyazensis and Cyclodium meniscioides var. meniscioides. This is the first report of hybridization between Cyclodium and Polybotrya. It represents a rare instance of an intergeneric hybrid in ferns. We present illustrations, a description, and taxonomic and ecologic comments of the new nothotaxon.