Terrestrial, to 55 cm tall; rhizome erect, with a few dark, lanceolate-linear scales. Leaves 1-pinnate; petiole and rachis dark reddish-brown, shiny; petiolules slender, 0.3-2.5 cm long; leaflets lunate to reniform, lobed on semicircular distal edge, truncate to obtuse on lower edge, to 4 cm long and 1.8 cm wide, glabrous. Sori interrupted along lobes on distal edge. Shattuck 1058. Rare, in the forest. This species has been confused with the name Adiantum philippense L., which should probably be considered a nomen dubium.