Medical Cannabis is a genus of flowering plants in the family Cannabaceae. The number of species within the genus is disputed.

Medical Cannabis 

Three species of medical cannabis may be recognized: Cannabis sativa, Cannabis Indica, and Cannabis ruderalis;  ruderalis may be included within sativa; all three may be treated as subspecies of a single species, sativa; or sativa may be accepted as a single undivided species. The genus is widely accepted as being indigenous to and originating from Asia.