Tribulus terrestris is an herb of zygophyllaceae plant family. This is an annual herb. The leaves are about 1 to 5 cm. long. The leaflets are 3-6 pairs and oblong to ovate or elliptic. The flowers are yellow. The fruits are about 5 to 12 Cms. In diameter with 2 hard spines. Tribulus terrestris is found in tropical climates of the world. It is found mainly in India, America, and Australia. Pedalium murex is native to India.