Dryopteris cognata, the large kidney fern, is a herbaceous plant, a member of the Dryopteridaceae family.
Distribution It is an endemic species to Saint Helena.
Taxonomy The species was first described as Lastrea cognata by Carl Borivoj Presl in 1851. In 1891 Otto Kuntze placed the species in genus Dryopteris as D. cognata.
References
External links https://www.pteridoportal.org/portal/taxa/index.php?taxon=dryopteris%20cognata https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=1972761 http://www.plantsystematics.org/imgs/robbin/r/Dryopteridaceae_Elaphoglossum_dimorphum_21925.html https://www.readcube.com/articles/10.1007%2Fs00606-003-0116-9