There are 40 to 60 species of ferns in this genus, distributed throughout tropical and warm temperate regions of the Old World. It is the only genus in the family. They have creeping rhizomes. Davallias can grow in trees as epiphytes, or non-harmful parasites.
Name Derivation: Named for Edmond Davall, 18th century English-born Swiss botanist
Davallia is in the family Davalliaceae.