fern genus - genera of ferns and fern allies

family Pteridaceae, Pteridaceae - one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided

cliff brake, cliff-brake, rock brake - any of several small lithophytic ferns of tropical and warm temperate regions

coffee fern, Pellaea andromedifolia - evergreen fern of California and Baja California

button fern, Pellaea rotundifolia - fern of New Zealand and Australia having trailing fronds with dark green buttonlike leaflets