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nounlarge genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae
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Definition that contains pteris
- brake any of various ferns of the genus Pteris having pinnately compound leaves and including several popular houseplants
- family thelypteridaceae genera Thelypteris, Phegopteris, and others
- bladder fern any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
- phegopteris beech ferns: genus is variously classified: considered alternative name for genus Dryopteris or included in genus Thelypteris
- thelypteris marsh ferns: in some classification systems considered part of genus Dryopteris in family Dryopteridaceae
- massachusetts fern delicate feathery shield fern of the eastern United States; sometimes placed in genus Thelypteris
- dryopteris oreades a fern of the genus Dryopteris
- woodfern any of various ferns of the genus Dryopteris
- parathelypteris novae-boracensis slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris
- genus gymnocarpium oak ferns: in some classification systems included in genus Thelypteris