Buy Indica Marijuana Strains, Cannabis indica, formally known as Cannabis sativa forma indica, is an annual plant in the Cannabaceae family. It is a putative species of the genus Cannabis. Whether it and Cannabis sativa are truly separate species is a matter of debate. Many uses come from Cannabis indica, such as extraction, cultivation, cloth from the fibers, medical uses, and a plant. Cannabis indica produces large amounts of tetrahydrocannabinol (THC). The large amounts of THC makes it most commonly used as a drug, whether it be for recreational or medical purposes.