| parathelypteris | (n) terrestrial ferns of warm and tropical Asia and North America, Syn. genus Parathelypteris |
| massachusetts fern | (n) delicate feathery shield fern of the eastern United States; sometimes placed in genus Thelypteris, Syn. Thelypteris simulata, Parathelypteris simulata |
| new york fern | (n) slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris, Syn. Dryopteris noveboracensis, Parathelypteris novae-boracensis |