Tribulus macrocarpus

Tribulus macrocarpus is a species of flowering plant in the family Zygophyllaceae, which is found to the central north of Western Australia, and southern inland Northern Territory and northern South Australia. It was first described by George Bentham in 1863 from a specimen collected by Francis Thomas Gregory from Nicol Bay. A holotype (K000725223) collected by Gregory is held at Kew. The specific epithet, macrocarpus, is derived from two Greek roots/words, macro- ("large", "great") and -carpus, ("-fruit" / "-fruited"), and describes the plant as having large fruits....read more on Wikipedia.