Ceratopteris thalictroides is a fern species belonging to the genus Ceratopteris, one of only two genera of the subfamily Parkerioideae of the family Pteridaceae.
It is commonly known as water sprite, Indian fern, water fern, oriental waterfern, and water hornfern. In the Philippines it is called pakung-sungay (literally 'antler fern' or 'horn fern').
Pan-tropical. Widespread.
Plants usually rooted in mud, very variable in size and appearance, scales on rhizome peltate, thin, translucent, pale brown, ...