Helianthus laetiflorus

Definitions of Helianthus laetiflorus
  1. noun
    tall rough-leaved perennial with a few large flower heads; central United States
    synonyms: showy sunflower
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    type of:
    helianthus, sunflower
    any plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow rays
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