This article is about the plant genus Cannabis. For use as a psychoactive drug in the genus, see Cannabis (drug).
Cannabis sativa L.
Cannabis indica Lam. (putative)
Cannabis ruderalis Janisch. (putative)
Cannabis Museum in AmsterdamCannabis (Cán-na-bis) is a genus of flowering plants that includes three putative species, Cannabis sativa L., Cannabis indica Lam., and Cannabis ruderalis Janisch. These three taxa are indigenous to central Asia and surrounding regions. Cannabis has long been used for fibre (hemp), for medicinal purposes, and as a psychoactive. Industrial hemp products are made from Cannabis plants selected to produce an abundance of fiber and minimal levels of THC (Δ9- tetrahydrocannabinol), a psychoactive molecule that produces the "high" associated with marijuana. The drug consists of dried flowers and leaves of plants selected to produce high levels of THC. Various extracts including hashish and hash oil are also produced from the plant. The cultivation and possession of Cannabis for recreational use is outlawed in most countries.