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Definition of Helianthus
1. Noun. Any plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow rays.
Exact synonyms: Sunflower
Generic synonyms: Flower
Group relationships: Genus Helianthus
Specialized synonyms: Helianthus Angustifolius, Swamp Sunflower, Common Sunflower, Helianthus Annuus, Mirasol, Giant Sunflower, Helianthus Giganteus, Indian Potato, Tall Sunflower, Helianthus Laetiflorus, Showy Sunflower, Helianthus Maximilianii, Maximilian's Sunflower, Helianthus Petiolaris, Prairie Sunflower, Girasol, Helianthus Tuberosus, Jerusalem Artichoke, Jerusalem Artichoke Sunflower
Generic synonyms: Flower
Group relationships: Genus Helianthus
Specialized synonyms: Helianthus Angustifolius, Swamp Sunflower, Common Sunflower, Helianthus Annuus, Mirasol, Giant Sunflower, Helianthus Giganteus, Indian Potato, Tall Sunflower, Helianthus Laetiflorus, Showy Sunflower, Helianthus Maximilianii, Maximilian's Sunflower, Helianthus Petiolaris, Prairie Sunflower, Girasol, Helianthus Tuberosus, Jerusalem Artichoke, Jerusalem Artichoke Sunflower
Medical Definition of Helianthus
1. A genus of tall, erect american herbs of the compositae. The seeds yield oil and are used as food and animal feed; the roots of helianthus tuberosum (jerusalem artichoke) are edible. (12 Dec 1998)