What is Cannabis?
"Cannabis (Cannabis sativa, or hemp) is an annual herbaceous plant belonging to the Cannabaceae family. This plant has been used for multiple purposes (medicinal, recreational, seed oil and industrial fiber, etc.) for thousands of years. Its psychoactive and physiologically active constituents, known as cannabinoids, are found in the flowers (and to a lesser extent the leaves, and minimally in the stems, and seeds)."
ElSohly, M., & Gul, W. (2014-08-21). Constituents of Cannabis Sativa. In Handbook of Cannabis. Oxford University Press.