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Small to medium terrestrial, lithophytic or, rarely, epiphytic ferns. Rhizome creeping, erect (sometimes forming a small trunk) or scandent. Fronds usually dimorphic but sterile and fertile fronds similar in some species. Lamina usually pinnate, pinnatisect or pinnatifid, but simple or lobed in some species; margins entire to serrate; veins free, usually forked and often terminating in glands close to the margin. Sori continuous, on either side of costa, ± covering the lower surface in dimorphic species with narrow fertile pinnae, or as a narrow longitudinal strip on either side of the costa in species with broad fertile pinnae; indusium present. Spores with variable surface ornamentation.
Plants terrestrial, moderate-sized or large. Rhizome usually erect or ascending, stout, dictyostelic, densely scaly; scales dark brown to brown, glossy, lanceolate, entire, basifixed. Fronds clustered, long stipitate; stipe robust, scaly at base, above naked; lamina pinnate, with reduced auricular lower pinnae, leathery; pinnae entire, linear, margin entire or serrulate; terminal pinna entire, similar to lateral pinnae; veins free, parallel, simple or forked. Sori linear, forming long coenosori adjacent and parallel to costa; indusium attached to commissure, facing toward costa; annulus longitudinal, interrupted, of 14-28 cells. Spores elliptic, usually smooth, with perispore.
Terrestrial, occasionally lithophytic ferns. Rhizome, stipe and sometimes pinna midvein with abaxial, lanceolate to linear-lanceolate medium to dark brown or black scales; scales sometimes attached to tubercles which remain to give a rough texture if scales are shed. Young fronds occasionally red. Fronds monomorphic or dimorphic; fertile fronds usually erect with narrower more widely spaced pinnae than the often prostrate sterile fronds; pinna margin sharply toothed; texture chartaceous to harsh; veins forked, at least in fertile pinnae. Sori borne on anastomoses parallel to pinna midvein.
Plants terrestrial or rarely on rock. Stems creeping to ascending or erect, slender to stout, sometimes climbing [rarely subarborescent]; scales brown or black. Leaves monomorphic or variously dimorphic, cespitose to scattered. Blades pinnatifid to 1-pinnate, rarely simple or 2-pinnate. Rachis and costae glabrous, scaly, or hairy abaxially. Veins free, often forked. Sori borne on vascular commissures parallel to costae, 1 per side, normally uninterrupted, linear, continuous along length of costa. Spores with perine smooth to variously winged or rugose. x = 28, 29, 31, 32, 34, 36.
Sori elongate, || costa, one on each side; indusium opening towards costa, firm, elongate. Sporangia rather large, crowded; annulus vertical, incomplete. Spores bilateral, reniform to subglobose, us. smooth. Rhizome dictyostelic, paleate, erect or ascending, sts forming a distinct caudex; or rhizome creeping, sts scandent. Fronds us. pinnate to pinnatifid, us. coriac. Over 200 spp., mainly of the southern hemisphere.
Medium-sized, terrestrial ferns. Rhizome creeping. Fronds dimorphic. Lamina pinnate or pinnatifid; margins serrate or crenate; bulbils sometimes present in axils of uppermost pinnae. Sterile pinnae with anastomosing veins. Sori longitudinal, continuous on either side of costa, ±covering the lower surface of narrow fertile pinnae; indusium present.
Sori continuous along each side of the costa of a leaflet, a sterile lamina present beyond the sorus or not
