genus Petasites ge·nus·pe·tasites uncommon noun 1. genus of rhizomatous herbs of north temperate regions: butterbur; sweet coltsfoot SynonymsPetasitesgenus Petasites Related words Broader terms asterid dicot genus Parts Compositae Part of butterburwinter heliotropesweet coltsfoot WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
