long creeping, hairy, never scaly, superficial. Stipe long. Fronds pinnate or
pseudo-pinnate, pinnae repeatedly pseudo-dichotomous. A pair of foliaceous
stipule -like outgrowths at each forking except ultimate ones only the stipules
an ultimate branches foliaceous. Lamina large forming thickets Veins forked
more than once. Sori exindusiate, round having more than six sprangia.
Sporangia pyriform with a well defined, uniseriate, uninterrupted, oblique
annulus and open by a vertical slit. Spores small perisporiate, trilete