pecopteris - Carboniferous fossil fern characterized by a regular arrangement of the leaflets resembling a comb

nonflowering plant, pteridophyte - plants having vascular tissue and reproducing by spores

fern seed - the asexual spore of ferns that resembles dust; once thought to be seeds and to make the possessor invisible

film fern, filmy fern - any fern of the genus Hymenophyllum growing in tropical humid regions and having translucent leaves

bristle fern, filmy fern - any fern of the genus Trichomanes having large pinnatifid often translucent fronds; most are epiphytic on tree branches and twigs or terrestrial on mossy banks

osmund, flowering fern - any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters

crape fern, Leptopteris superba, Prince-of-Wales feather, Prince-of-Wales fern, Prince-of-Wales plume, Todea superba - New Zealand with pinnate fronds and a densely woolly stalks; sometimes included in genus Todea

crepe fern, king fern, Todea barbara - fern of rain forests of tropical Australia and New Zealand and South Africa

curly grass, curly grass fern, Schizaea pusilla - rare small fern of northeastern North America having numerous slender spiraling fronds and forming dense tufts

Anemia adiantifolia, pine fern - fern of Florida and West Indies and Central America with rhizome densely clad in grown hairs

climbing fern - any of several ferns of the genus Lygodium

Mohria caffrorum, scented fern - sweetly scented African fern with narrow bipinnate fronds

aquatic fern, water fern - ferns that grow in water

adder's tongue, adder's tongue fern - ferns with fertile spikes shaped like a snake's tongue

grape fern - a fern of the genus Botrychium having a fertile frond bearing small grapelike clusters of spore cases

flowering fern, Helminthostachys zeylanica - Australasian fern with clusters of sporangia on stems of fertile fronds

class Filicinae, class Filicopsida, Filicinae, Filicopsida - ferns

Diplopterygium longissimum, giant scrambling fern - large scrambling fern forming large patches to 18 feet high; Pacific region and China

fan fern, Gleichenia flabellata, Sticherus flabellatus, umbrella fern - large Australasian fern with fanlike repeatedly forked fronds; sometimes placed in genus Gleichenia

polypody - any of numerous ferns of the genus Polypodium

Aglaomorpha meyeniana, bear's-paw fern - epiphytic fern with large fronds; Taiwan and Philippines

strap fern - fern with long narrow strap-shaped leaves

Drynaria rigidula, basket fern - giant epiphytic or lithophytic fern; Asia to Polynesia and Australia

lecanopteris - any of several bizarre ferns of the genus Lecanopteris having swollen hollow rhizomes that provide homes for symbiotic ants

Microgramma-piloselloides, snake polypody - epiphytic ferns with long rhizomes; tropical America

climbing bird's nest fern, Microsorium punctatum - tropical Africa to Australasia and Polynesia

golden polypody, Phlebodium aureum, Polypodium aureum, rabbit's-foot fern, serpent fern - tropical American fern with brown scaly rhizomes cultivated for its large deeply lobed deep bluish-green fronds; sometimes placed in genus Polypodium

staghorn fern - any of various tropical ferns of the genus Platycerium having large flat lobed fronds often resembling the antlers of a stag

Cyclophorus lingua, felt fern, Pyrrosia lingua, tongue fern - east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus

Solanopteris bifrons, potato fern - small epiphytic fern of South America with tuberous swellings along rhizomes

grass fern, Vittaria lineata, ribbon fern - epiphytic fern found in lowland forests of tropical America