genus Cyathea ge·nus·cyat·hea uncommon noun 1. type genus of the Cyatheaceae: tree ferns of the tropical rain forest to temperate woodlands SynonymsCyatheagenus Cyathea Related words Broader terms fern genus Parts Cyatheaceae Part of silver tree fern WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
