Aloes: The genus Aloe

Aloes are a large genus of plants, about 450 species, from sub-Saharan Africa, Madagascar, and parts of Arabia. Many species are widespread in warm or tropical semi-arid regions, yet the distribution of others is limited to a few living in desert or wet mountainous regions. While some species have been adopted as medicinal plants since ancient times and others are used locally in folk medicine, scientists have yet to discover the full biological activity of the many aloe compounds. In order to realize the vast potential of the genus, it is essential to gather the knowledge acquired over the last fifty years into one comprehensive compilation.