Dryopteris carthusiana
Habitat: damp forests.
Region: holarctic Kingdom.
English: Narrow buckler-fern; Spinulose woodfern.
Taxonomy:
It is a tetraploid of hybrid origin, one parent being Dryopteris intermedia, and an unknown, apparently extinct species dubbed Dryopteris semicristata, which is also the presumed parent of the hybrid-origin Dryopteris cristata.