Basal pinnae blunt triangles longer than
Mildly dimorphic, fertile fronds with pinnae
only slightly twisted from vertical.
Broader blade and pinnae than D.
cristata, with acuminate tips. Sori more
Basal scales on stipe often with very dark base.
Large spores measure 55 microns
Allohexaploid, from D. cristata x D.
Blunt lower pinnae identifiable in sterile