Home
Plants terrestrial or on rock. Stems erect or creeping, branched; scales pale brown to black, concolored, elongate, margins entire. Leaves monomorphic, clustered or closely spaced, 1--20 dm. Petiole straw-colored, green, brownish red to purple black, longitudinally ridged, 2--3-grooved adaxially, scaly at base, glabrous or scaly distally, with 1 (less often 2 or more) vascular bundle. Blade oblong to lanceolate to deltate, 1--4-pinnate, herbaceous to leathery, abaxially and adaxially glabrous or sometimes pubescent or scaly, adaxially dull, not striate; rachis straight. Ultimate segments of blade sessile to short-stalked, linear to oblong-lanceolate, 1.5--8 mm wide; base truncate or narrowed to stalk, stalk when present green, not lustrous; margins plane or reflexed to form false indusia. Veins in leaves conspicuous, free (except in sori) and forking well above base of segment, or highly anastomosing. False indusia pale, scarious, covering sori. Sporangia intramarginal, sori usually continuous except at pinna or segment apex and sinuses, paraphyses present. Spores brown, trilete, tetrahedral, rugate and/or tuberculate, usually with prominent equatorial flange. x = 29.
Rhizome short-creeping or erect, often stout, rarely with prop roots. Stipe stramineous, reddish, brown or purple, scaly at the base. Lamina (in Australian species) 1–4-pinnate-pinnatifid or tripartite-pedate, herbaceous to coriaceous, glabrous or hairy. Pinnae often with short spines at base of ultimate costules; basal pair of pinnae tending to be branched, or with more complex division than the others; veins free or anastomosing. Sori linear, marginal to submarginal, connecting the vein endings, continuous except at apices and sinuses of ultimate segments; false indusium linear, continuous; paraphyses absent to abundant. Spores tetrahedral or bilateral.
Sori continuous along margins of segs except at apices, protected by reflexed modified margin, exindusiate. Spores tetrahedral, smooth to tuberculate. Rhizome short, dictyostelic, forming an ascending paleate (sts also hairy) stock. Fronds closely approximate, pinnate to decompound; veins free or anastomosing. Terrestrial ferns with over 250 spp. mainly tropical, but with representatives in temperate regions.
Terrestrial ferns. Rhizomes erect to long-creeping, scaly. Fronds 1-5-pinnate; ultimate segments often elongated; veins free or anastomosing. Sori continuous along lamina margins on a vascular commissure connecting vein endings, bearing paraphyses, protected by strongly differentiated recurved lamina margins. Spores trilete.
Sori joining many veins, usually one sorus along each edge of a lobe of the lamina.
