Cannabis strains including Hemp and Marijuana are either pure or hybrid of the plant genus Cannabis, which encompasses the species Sativa, Indica and Ruderalis.
Varieties are developed to intensify specific characteristics of the plant, or to differentiate the strain for the purposes of marketing or to make it more effective as a natural supplement. Variety names are typically chosen by their growers, and often reflect properties of the plant such as taste, color, smell, or the origin of the variety. These varieties have been cultivated to contain a high percentage of cannabinoids, including CBD, CBG, CBC and more. Several varieties of Cannabis, known as Hemp, have a very low THC content, and are instead grown for their fiber, seed and therapeutic properties.