Plants terrestrial, rarely climbing or epiphytic. Rhizomes creeping, sometimes scandent, protostelic or solenostelic, covered with narrow scales and/or hairs; scales basifixed, glabrous, 2-6(-12) cells wide at base, cells thick-walled, scale margin entire, apex bristlelike, ca. 1 cell wide. Fronds approximate or distant, vernation circinate; stipe not articulate to rhizome, with a single vascular bundle; lamina 1-4-pinnate, rarely simple, imparipinnate or not, herbaceous, papery, or thinly leathery, glabrous or with scattered very minute (microscopic) 2-celled hairs; pinnae or pinnules symmetrical or dimidiate, anadromous, rarely catadromous; veins free or anastomosing without included veinlets. Sori marginal or submarginal, terminal on a single veinlet or on 2 to several uniting veinlets, linear or oblong, indusiate; indusia basally adnate, laterally free or adnate, opening toward margin. Spores 32 per sporangium, tetrahedral-globose, globose, or ellipsoid, trilete or monolete.
More
Small mostly terrestrial occasionally epiphytic or lithophytic ferns. Rhizome creeping or shortly suberect, densely covered with narrow sometimes bristle-like scales. Stipe often with a few basal scales. Lamina simple (not in Australia) or 1–many-pinnate; rachis deeply grooved. Lower margins of pinnae and pinnules thickened, decurrent on edge of rachis groove; midrib not usually present; veins not extending to margins, free or anastomosing and without included veinlets. Sori submarginal, discrete or continuous; indusium membranous, attached by its base and sometimes also by its sides, opening towards margin. Spores tetrahedral or bilateral; surface ± smooth. Gametophyte cordate.
Home
