Distribution
The natural range of Aloe vera is unclear, as the species has been widely cultivated throughout the world. Naturalised stands of the species occur in the southern half of the Arabian peninsula, through North Africa, from Morocco to Egypt and Sudan, along with the Canary, Cape Verde and Madeira Islands. This distribution is similar to the one of Euphorbia balsamifera, Pistacia atlantica and a few others, suggesting that a dry sclerophyl forest once covered large areas, but has been dramatically reduced due to desertification in the Sahara, leaving these few patches isolated. The species was introduced to China and various parts of southern Europe in the 17th century. The species is widely naturalised elsewhere, occurring in temperate and tropical regions of Australia, Barbados, Belize, Nigeria, Paraguay and the US It has been suggested that the actual's species distribution is the result of human cultivation and that the taxinomy could be doubtful too.