Flora of New Zealand Series

Sori continuous along margins of segs, protected by reflexed modified margin; sporangia with slender stalks; spores bilateral, tuberculate. Rhizome far-creeping, solenostelic, paleate. Frond large; pinnae opp. or nearly so, sessile or subsessile, glab., often glaucous; veins anastomosing, without included veinlets. About 10 spp. of terrestrial, mainly tropical, ferns of indefinite growth.