1910–1911
Britannica 11th
Encyclopaedia Britannica · 11th edition
SUNFLOWER. The common sunflower, known botanically as Helianthus annuus, a member of the natural order Compositae, is a native of the western United States. It is an annual herb with a rough hairy stem 3 to 12 ft. high, broad coarsely toothed rough leaves 3 to 12 in. long, and heads of flowers 3 to 6 in. wide in wild specimens and often a foot or more in cultivated. Double forms are in cultivation, one (globosus fistulosus) having very large globular heads. The plant is valuable from an economic as well as from an …
- Source status
- OCR text aligned to scanned pages
- Pages
- Vol. 26, pp. 102-102