Pteridium Gled. ex Scop.
Sori continuous along margins of segs, protected by reflexed margin and a true indusium (sts obsolete). Sporangia with slender stalks; spores tetrahedral, smooth. Rhizome far-creeping and branching, deep seated, solenostelic, clad in hairs. Frond pinnately compound, coriac., ± hairy; veins free, simple or forked, connected by marginal nerve. Terrestrial, subcosmopolitan. The forms treated by some as one sp. with a number of vars, by others as consisting of a number of closely related spp.