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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
- beech fern any fern of the genus Phegopteris having deeply cut triangular fronds
- thelypteris marsh ferns: in some classification systems considered part of genus Dryopteris in family Dryopteridaceae
- parkeriaceae coextensive with the genus Ceratopteris; sometimes included in family Polypodiaceae
- lecanopteris any of several bizarre ferns of the genus Lecanopteris having swollen hollow rhizomes that provide homes for symbiotic ants
- genus phegopteris beech ferns: genus is variously classified: considered alternative name for genus Dryopteris or included in genus Thelypteris
- dryopteris noveboracensis slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris
- woodfern any of various ferns of the genus Dryopteris
- oreopteris 3 species of ferns formerly included in genus Dryopteris or Thelypteris
- family thelypteridaceae genera Thelypteris, Phegopteris, and others