Genus:Parthenium Family:Asteraceae (alt. Compositae). Nomen number: 315270 Place of publication: F. W. H. A. von Humboldt et al., Nov. gen. sp. 4:204[folio]. 1818; 4:260[quarto], t. 391. 1820 Name verified on: 18-Jul-2008 by ARS Systematic Botanists. Last updated: 18-Jul-2008