New Scientist Rasta lends its name to a third type of cannabis - News:
"AS POLICE and dope smokers know, there are two types of cannabis. Cannabis sativa sativa is mainly used to make hemp, while the indica subspecies is prized for its tetrahydrocannabinol (THC) content, which produces the 'high'. But now Australian researchers have discovered a third type of cannabis, called rasta.
Simon Gilmore of the Canberra Institute of Technology catagorised 196 sample plants according to the DNA in their mitochondria and chloroplasts. The samples included plants grown for drugs and hemp as well as wild varieties from Europe, Asia, Africa, Mexico and Jamaica.
The results showed three distinct 'races' of cannabis. In central Asia the THC-rich indica predominated, while in western Europe sativa was more common. In India, south-east Asia, Africa, Mexico and Jamaica the rasta variant predominated. It looks similar to the sativa subspecies, but generally contains higher levels of THC."