Diplazium esculentum; an edible fern found throughout Asia and Oceania.

plural of fertility rate

A device, used mainly in homebrewing, that allows carbon dioxide to escape from a fermenter without allowing air to enter

A fern of the species Parathelypteris noveboracensis (syn. Thelypteris noveboracensis), native to eastern North America.

Nephrolepis exaltata cv. Bostoniensis, a fern with gracefully arching fronds.

Certain species of the fern genera Dryopteris, Polystichum, and others.

Dryopteris (buckler ferns) / Lastreopsis spp. / Polystichum spp.

Matteuccia struthiopteris, a crown-forming, colony-forming fern occurring in temperate regions of the Northern Hemisphere in eastern and northern Europe, northern Asia and northern North America.

Alsophila baileyana, a tree fern native to northeastern Queensland in Australia.

Onoclea sensibilis, a coarse-textured, medium to large-sized deciduous perennial fern.