:Introduction
Xanthium strumarium, commonly known as rough cocklebur, Noogoora burr, clotbur, common cocklebur, large cocklebur, or woolgarie bur, is an annual plant species belonging to the Asteraceae family. While some sources suggest that it is native to southern Europe and Asia, it has become widely naturalized in other regions. In contrast, references such as the Flora of China and Flora of North America propose that its original range is in the Americas, from where it was likely introduced to Eurasia at an early stage.
: Details
Xanthium strumarium, commonly referred to as rough cocklebur, Noogoora burr, clotbur, common cocklebur, large cocklebur, or woolgarie bur, is an annual species of the family Asteraceae. Its native range remains debated: some accounts consider it indigenous to southern Europe and Asia, whereas floristic references such as the Flora of China and Flora of North America identify the Americas as its place of origin, from where it was likely introduced into Eurasia at an early stage. Today, it is widely naturalized across diverse regions and is often regarded as an invasive or weedy species in many parts of the world.