fern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

Dryopteris, genus Dryopteris - large widespread genus of medium-sized terrestrial ferns; in some classification systems placed in Polypodiaceae

Dryopteris fragrans, fragrant cliff fern, fragrant shield fern, fragrant wood fern - fern or northern Eurasia and North America having fragrant fronds

Dryopteris filix-mas, male fern - fern of North America and Europe whose rhizomes and stalks yield an oleoresin used to expel tapeworms

Dryopteris marginalis, leatherleaf wood fern, marginal wood fern, evergreen wood fern - North American fern with evergreen fronds

Dryopteris oreades, mountain male fern - a fern of the genus Dryopteris