IUCN threat status:

Not evaluated

Comprehensive Description

Read full entry

Comments

The Annual Sunflower is thought to be adventive from western United States. However, it was cultivated as a source of food by native Americans, and was likely introduced to Illinois by them prior to European settlement. The cultivated sunflower of modern agriculture is a self-pollinating hybrid of this plant and another annual sunflower that occurs in the Great Plains. Because of its large heart-shaped leaves, it is easy to distinguish the Annual Sunflower from other Helianthus spp. (Sunflowers) that occur in the Midwest. Return

Trusted

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© John Hilty

Source: Illinois Wildflowers

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!