https://www.rhs.org.uk/plants/75319/dryopteris-dilatata-lepidota-grandiceps/details
Dryopteris dilatata 'Lepidota Grandiceps' | /RHS
dryopteris dilatatarhs
https://www.rhs.org.uk/plants/268799/dryopteris-dilatata-cristatum-group/details
Dryopteris dilatata Cristatum Group | /RHS
dryopteris dilatatagrouprhs