2) (P. vulgare) is widely diffused in the British Isles, where it is found on walls, banks, trees, &c.; the creeping, densely-scaly rootstock bears deeply pinnately cut fronds, the fertile ones bearing on the back.
Cornubiense is a very elegant plant with finely-divided fronds; var.
Cristatum is a handsome variety with fronds forking at the apex and the tips of all the pinnae crested and curled.
P. dryopteris, generally known as oakfern, is a very graceful plant with delicate fronds, 6 to 12 in.
P. phegopteris (beechfern) is a graceful species with a black, slender root-stock, from which the pinnate fronds rise on long stalks, generally about 12 in.
How would you define fronds? Add your definition here.