genus ((biology) taxonomic group containing one or more species)
Hyponyms (each of the following is a kind of "fern genus"):
Dryopteris; genus Dryopteris (large widespread genus of medium-sized terrestrial ferns; in some classification systems placed in Polypodiaceae)
genus Woodsia (genus of small to medium-sized usually rock-inhabiting ferns of temperate and cold regions; in some classification systems placed in Polypodiaceae)
Bolbitis; genus Bolbitis (terrestrial or less than normally scandent ferns of tropical regions of northern hemisphere)
genus Polystichum; Polystichum (small to medium-sized terrestrial ferns especially holly ferns; in some classification systems placed in Polypodiaceae)
Cheilanthes; genus Cheilanthes (small evergreen ferns: lipferns; in some classifications placed in family Polypodiaceae or Adiantaceae)
genus Horneophyton; Horneophyton (Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller)
genus Onychium; Onychium (small terrestrial ferns of Old World tropics and subtropics: claw ferns; sometimes placed in family Cryptogrammataceae)
genus Pellaea; Pellaea (genus of chiefly small rock-loving ferns; in some classification systems it is placed in the family Polypodiaceae or Adiantaceae)
genus Pityrogramma; Pityrogramma (terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae)
genus Pteris; Pteris (large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae)
genus Marattia; Marattia (type genus of the Marattiaceae: ferns having the sporangia fused together in two rows)
genus Psilophyton (type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia)
genus Rhynia; Rhynia (type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes)
genus Phegopteris; Phegopteris (beech ferns: genus is variously classified: considered alternative name for genus Dryopteris or included in genus Thelypteris)
Drynaria; genus Drynaria (large robust epiphytic ferns of tropical forest and scrub; Africa and Asia and Australia)
Azolla; genus Azolla (a genus of fern sometimes placed in its own family Azollaceae)
Blechnum; genus Blechnum (in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns)
Doodia; genus Doodia (in some classification systems placed in family Polypodiaceae; small terrestrial colony-forming ferns of Australasia)
genus Sadleria; Sadleria (low tree ferns with large fronds; in rain forests and on lava flows of Hawaiian Islands)
genus Stenochlaena; Stenochlaena (large tropical ferns; some epiphytic climbers and some terrestrial bog ferns; Africa; Asia; Australasia)
genus Woodwardia; Woodwardia (in some classification systems placed in family Polypodiaceae: chain ferns)
Cyathea; genus Cyathea (type genus of the Cyatheaceae: tree ferns of the tropical rain forest to temperate woodlands)
genus Davallia (Old World tropical fern; in some classification systems placed directly in family Polypodiaceae)
Dennstaedtia; genus Dennstaedtia (chiefly terrestrial ferns; in some classification systems placed in family Polypodiaceae)
Dicksonia; genus Dicksonia (tree ferns of temperate Australasia having bipinnatifid or tripinnatifid fronds and usually marginal sori; in some classification systems placed in family Cyatheaceae)
Cibotium; genus Cibotium (in some classification systems placed in family Cyatheaceae: ornamental tree ferns with coarse gracefully drooping fronds)
Culcita; genus Culcita (includes some plants usually placed in e.g. genus Dicksonia: terrestrial ferns resembling bracken; tropical America; Malaysia to Australia and Polynesia; southwestern Europe and Atlantic islands)
Camptosorus; genus Camptosorus (classification used in some especially former systems for plants usually placed in genus Asplenium)
Ceterach; genus Ceterach (small genus of Old World ferns; superseded in some classification systems which place plants of this genus in e.g. genera Asplenium and Pleurosorus)
division Pteridophyta; Pteridophyta (containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta)
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