about cannabis are not confined to its value as a medicine or to its
possible hazards as a recreational drug.1 Something much more
fundamental has been engaging the experts for years: its taxonomy.
Are all plants belonging to the genus Cannabis mere varieties of a
single species—or is it correct to recognise at least three
his original 1753 classification, Carl Linnaeus identified just one,
Cannabis sativa. The first indication of dissent came in 1785 when
another eminent biologist, Jean-Baptiste Lamarck, was given some
plant specimens collected in India.
National Library of Medicine, Cannabis Confusion by Geoff Watts,
January 21, 2006