Acanthospermum hispidum

Acanthospermum hispidum (bristly starbur, goat's head, hispid starburr, starbur) is an annual plant in the family Asteraceae, which is native to Central and South America. This plant is cited as a weed in cotton culture in Brazil, and it is also used as a medicinal plant. It is also naturalized in many scattered places in Eurasia, Africa, and North America   It is naturalized in Australia and is a declared weed in Western Australia.