from The Century Dictionary.
- noun A small genus of boreal polypodiaceous ferns, the rock-brakes, distinguished from
Pellæamainly by their dimorphic fronds.
from the GNU version of the Collaborative International Dictionary of English.
- noun a genus sometimes placed in the family
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun sometimes placed in family Polypodiaceae or Cryptogrammataceae
Sorry, no etymologies found.
On the old moraines and cliffs is found the pea fern (_cryptogramma acrostichoides_), so called because the pinnules of its fruiting fronds resemble those of a pea pod.
Naturally enough the greater number are rock ferns -- pellaea, cheilanthes, polypodium, adiantum, woodsia, cryptogramma, etc., with small tufted fronds, lining cool glens and fringing the seams of the cliffs.