Ceratopteris cornuta (P.Beauv.) Lepr.

A small fern which grows in water. It roots in the mud. The rhizome is erect. The stems are spongy. The fronds form tufts. The fronds are divided twice. They have many small plants attached. The segments are broad, blunt and rounded. The sterile fronds are erect or spreading. The stalk of the frond can be 4-18 cm long. The blade of the frond is triangle shaped and leaflets are divided 1 or 2 times. These can be 7-25 cm long and 4-20 cm wide.

In shallow water in lakes and streams and brackish water, floating or rooting in mud; up to 1, 500 ft. alt.

Plants can be grown from the buds which grow on fronds. These can be broken off and planted. The spores germinate on wet mud.