Gleicheniaceae C.Presl
Sori dorsal, exindusiate, in a single row on either side of mid-vein of pinnule. Sporangia 1-12 per sorus, seldom more, radiate about central receptacle; annulus complete, medial, transverse. Rhizome far-creeping, dichotomously branched, ± clad, as are stipites and rhachides, in slender hairs, and acuminate scales. Fronds us. much-branched by abortion or arrestment of terminal bud and elongation of subapical lateral pinnae. Veins free. Some 130 spp., mainly of genus Gleichenia, of tropical to south temperate regions.
