-
nounany of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by sporestype of:
Definition that contains fern
- bracken fern of southeastern Asia; not hardy in cold temperate regions
- thelypteris palustris pubescens fern of northeastern North America
- walking leaf ferns having lanceolate fronds that root at the tip
- button fern fern of New Zealand and Australia having trailing fronds with dark green buttonlike leaflets
- campyloneurum augustifolium fern with shorter and narrower leaves than Florida strap fern; Florida to West Indies and Mexico and south to Argentina
- boulder fern fern of eastern North America with pale green fronds and an aroma like hay
- dryopteris fragrans fern or northern Eurasia and North America having fragrant fronds
- fragrant wood fern fern or northern Eurasia and North America having fragrant fronds
- polypodium polypodioides fern growing on rocks or tree trunks and having fronds greyish and scurfy below; Americas and South Africa
- black-stem spleenwort fern of tropical America: from southern United States to West Indies and Mexico to Brazil