Description from Flora of China
Plants epiphytic, with long twining, wiry rhizomes. Rhizomes with peltate scales, with 2 rows of fronds. Fronds distant, articulate to phyllopodium; lamina pinnate; pinnae close together, subsessile. Venation free, 2 or 3 times forked. Sori orbicular, in a single row between costa and margin; indusia reniform; sporangia long stipitate, annulus with 10-13 thickened cells. Spores elliptic; perispore granular. n = 41.
About 20 species: Africa, SW to E Asia, Australia, Madagascar, Pacific islands; one species in China.
(Authors: Xing Fuwu (邢福武), Wang Faguo (王发国); Peter H. Hovenkamp)