KEY TO THE GENERA

1	Young parts of plants protected by fringed peltate scales and stellate hairs. Sori of 2-5 sporangia. Veins simple or once forked Gleichenia
1'	Young parts of plants protected by branched hairs of various form, scales lacking. Sori of 8-15 or more sporangia. Veins forked at least twice Dicranopteris