Xanthium strumarium, commonly known as common cocklebur, is a flowering plant in the Asteraceae family. It is native to North America but can also be found in parts of Europe and Asia. This annual plant typically grows in disturbed areas, such as roadsides and fields, and can reach heights of up to 1.5 meters. Its leaves are large and lobed, while its flowers are small and clustered. The plant produces distinctive burrs that can cling to fur and clothing, aiding in seed dispersal. Xanthium strumarium is often considered a weed due to its invasive nature and can compete with native vegetation. It has also been studied for its potential medicinal properties, although some parts of the plant are toxic if ingested.