The fern, which grows at the base of large branches, has a unique ability to trap water and develop its own store of humus. Epiphytic fern having a stout and erect rhizome, bearing a rosette of leaves at the top. Leaf stalks are stout and almost black, leaf length can be up to 150 cm or more and up to 20 cm wide. It narrows gradually, tapering both towards the pointed tip and towards the base. Spores are light brown, transparent when fresh.