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Genus Anemia
- genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America
Genus Lygodium
- chiefly tropical climbing ferns
Genus Mohria
- African terrestrial ferns
Genus Regnellidium
- 1 species of aquatic or semi-aquatic fern
Genus Salvinia
- type genus of the Salviniaceae: water ferns
Genus Azolla
- a genus of fern sometimes placed in its own family Azollaceae
Genus Ophioglossum
- the type genus of the fern family Ophioglossaceae