The Collaborative International Dictionary of English v.0.48:

Cryptogramma \Cryptogramma\ n.
   a genus sometimes placed in the family Polypodiaceae or
   Cryptogrammataceae.

   Syn: genus Cryptogramma.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Cryptogramma
    n 1: sometimes placed in family Polypodiaceae or
         Cryptogrammataceae [syn: Cryptogramma, genus
         Cryptogramma]