helianthus

/ˈhiliˌænθəs/

Definitions of helianthus

1. noun

   any plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow rays
   synonyms: sunflower

   types:

   Helianthus angustifolius, swamp sunflower

   sunflower of eastern North America having narrow leaves and found in bogs

   Helianthus annuus, common sunflower, 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

   Helianthus giganteus, Indian potato, giant sunflower, tall sunflower

   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, Jerusalem artichoke sunflower, girasol

   tall perennial with hairy stems and leaves; widely cultivated for its large irregular edible tubers

   type of:

   flower

   a plant cultivated for its blooms or blossoms