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Division: Tracheophyta
Class: Magnoliopsida
Order: Asterales
Family: Asteraceae
Common name: Surjamukhi (Beng.); Sunflower plant (Eng.).
Life cycle: Annual
Native Range: Native to the Americas. Helianthus annuus, that possess a large inflorescence (flowering head). Their leaves alternate and have no stipules, flowers in compact heads with 5 stamens, the heads often appear as the flowers when actually some have ray flowers and small tube flowers in central disk, under each flower head is a small grouping of leaflets, known as bracts. Its most commonly grow to heights between 1.5 and 3.5 m (5–12 ft). It grows best in sunny, moist, or disturbed areas. The sunflower is tolerant of high and low temperatures, although more tolerant to low temperatures with the optimum temperature range being 70-78 degrees Fahrenheit. |
