Anadenanthera peregrina, also known as yopo, jopo, cohoba, parica or calcium tree, is a perennial tree of the Anadenanthera genus native to the Caribbean and South America. It grows up to 20 m (66 ft) tall, having a horny bark. Its flowers are pale yellow to white and spherical. It is not listed as being a threatened species. It is an entheogen used in healing ceremonies and rituals. It is also a well known source of dietary calcium.