pronounced: ter-rid-AY-see-eye
The name is derived from the Greek πτεροεις (pteroeis), feather-like. This is a family of ferns with creeping or erect rhizomes and that are mostly terrestrial or lithophytic. The leaves are almost always compound and have linear sori, typically on the leaf margins, that lack a true indusium, but are protected by a false indusium made from the reflexed margin of the leaf. The family is widespread in the tropical and warm temperate regions.
