- brittle maidenhair, brittle maidenhair fern, Adiantum tenerum - tropical American fern with broad pinnae; widely cultivated
--1 is a kind of maidenhair, maidenhair fern
--1 has particulars:Farley maidenhair, Farley maidenhair fern, Barbados maidenhair, glory fern, Adiantum tenerum farleyense