helianthus | | |
n. (plant) | 1. helianthus, sunflower | any plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow rays. |
| ~ flower | a plant cultivated for its blooms or blossoms. |
| ~ genus helianthus | genus of tall erect or branched American annual or perennial herbs with showy flowers: sunflowers. |
| ~ helianthus angustifolius, swamp sunflower | sunflower of eastern North America having narrow leaves and found in bogs. |
| ~ common sunflower, helianthus annuus, mirasol | annual sunflower grown for silage and for its seeds which are a source of oil; common throughout United States and much of North America. |
| ~ giant sunflower, helianthus giganteus, tall sunflower, indian potato | very tall American perennial of central and the eastern United States to Canada having edible tuberous roots. |
| ~ helianthus laetiflorus, showy sunflower | tall rough-leaved perennial with a few large flower heads; central United States. |
| ~ helianthus maximilianii, maximilian's sunflower | tall perennial of central United States to Canada having golden-yellow flowers. |
| ~ helianthus petiolaris, prairie sunflower | similar to the common sunflower with slender usually branching stems common in central United States. |
| ~ helianthus tuberosus, jerusalem artichoke sunflower, girasol, jerusalem artichoke | tall perennial with hairy stems and leaves; widely cultivated for its large irregular edible tubers. |
sunflower | | |
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