English name: Northern Buckler-fern
Gaelic name: Raineach nan Radan Thuathch
Synonym: Dryopteris assimilis
Atlas of Ferns:
Post 1950 records: NG25, 53.
British Pteridophyte Records:
BPS Bulletin Volume 2, Number 1, (1979): NG54 C. W. Murray.
Botanist in Skye: NG25, 53.
Dryopteris expansa is one of the rarest ferns on Skye. In the "Botanist in Skye" it states that it was found on the wall of Dun Fiadhairt near Dunvegan.