Any of several annual
plants of the genus Helianthus, native to North and South America
. The flower heads resemble huge daisies with yellow ray flowers and a centre disc of yellow, brown, or purple. The seeds yield a useful oil. The common sunflower (H. annuus) has 30cm (1ft) leaves and flower heads more than 30cm (1ft) across; height: to 3.5m (12ft). Family Asteraceae/Compositae.
sun·flow·er / ˈsənˌflou(-ə)r/ •
n. a tall North American plant (Helianthus annus) of the daisy family, with very large golden-rayed flowers. Sunflowers are cultivated for their edible seeds, which are an important source of oil for cooking and margarine.
Annual plant, Helianthus annuus
, introduced into Europe
from the Americas by the Spanish in 1510.
An important commercial source of edible oil (low in saturates, 12%, approximately 70% polyunsaturated); residual oilseed cake is used as animal feed.