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Definition of Genus Helianthus
1. Noun. Genus of tall erect or branched American annual or perennial herbs with showy flowers: sunflowers.
Generic synonyms: Asterid Dicot Genus
Group relationships: Aster Family, Asteraceae, Compositae, Family Asteraceae, Family Compositae
Member holonyms: Helianthus, Sunflower
Group relationships: Aster Family, Asteraceae, Compositae, Family Asteraceae, Family Compositae
Member holonyms: Helianthus, Sunflower