Terrestrial. Rhizome dichotomously branched, near the apex protected by peltate scales. Fronds of mature plants usually with indefinite growth in length, bearing primary branches in pairs. Main rachis high-climbing; resting buds covered with brown, short-fringed scales; stipular leaflets at base of primary branch and at its first fork, deltoid, deeply lobed or the basal lobes again lobed, up to 2.7 cm long; rachis branches repeatedly forked, all branches, except the basal segments, leafy throughout, each branch 7.5–12 cm long; lobes patent, adnate at base, hardly decurrent to the next ones, usually irregular in length even on the same branch, up to 3.5 cm long, 2 mm broad, the margin entire, revolute, not glaucous beneath; veins free. Sori exindusiate, with 3–5 sporangia, surrounded by stellate hairs, medial