Helianthus

Genus of flowering plants, the sunflowers

Helianthus is a genus comprising around 50 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. The species of Helianthus are native to North America. The best-known species is the common sunflower (Helianthus annuus).

From Wikipedia, under CC BY-SA. More on occurri.