The fern genera Dryopteris and Nothoperanema (Dryopteridaceae) in Madagascar and neighbouring Indian Ocean islands, including Saint Paul

Based on detailed morphological studies of a large number of herbarium specimens from various herbaria, a review of the fern genera Dryopteris and Nothoperanema in Madagascar and neighbouring Indian Ocean islands, including Saint Paul, is presented. Eleven species and a putative hybrid are recorded for the region, seven of these are considered endemic to the region.