https://www.rhs.org.uk/plants/223273/dryopteris-affinis-subsp-affinis-var-disjuncta/details
Find help & information on Dryopteris affinis subsp. affinis var. disjuncta oak fern from the RHS
dryopteris affinisoak fernsubspvarrhs
https://www.rhs.org.uk/plants/99611/dryopteris-affinis-cristata-angustata/details
Find help & information on Dryopteris affinis 'Cristata Angustata' scaly male fern 'Cristata Angustata' Ferns from the RHS
scaly male ferndryopteris affiniscristataferns