  cannabis sativa is an annual herbaceous plant in the cannabis genus, a species of the cannabaceae family. people have cultivated cannabis sativa throughout recorded history as a source of industrial fibre, seed oil, food, recreation, religious and spiritual moods, and medicine. each part of the plant is harvested differently, depending on the purpose of its use. the species was first classified by carolus linnaeus in 1753.greg green, the cannabis breeder's bible, green candy press, 2005, pp. 15-16 isbn 9781931160278 ==common uses==  thumb|right|a sack made from hemp fiber its seeds are chiefly used to make hempseed oil which can be used for cooking, lamps, lacquers, or paints. they can also be used as caged-bird feed, as they provide a moderate source of nutrients for most birds. the flowers (and to a lesser extent the leaves, stems, and seeds) contain psychoactive chemical compounds known as cannabinoids that are consumed for recreational, medicinal, and spiritual purposes. when so used, preparations of flowers (marijuana) and leaves and preparations derived from resinous extract (e.g.hashish) are consumed by smoking, vaporizing and oral ingestion. historically, tinctures, teas, and ointments have also been common preparations. in traditional medicine of india in particular c. sativa has been used as hallucinogenic, hypnotic, sedative, analgesic, and anti-inflammatory agent.wang l, waltenberger b, pferschy-wenzig em, blunder m, liu x, malainer c, blazevic t, schwaiger s, rollinger jm, heiss eh, schuster d, kopp b, bauer r, stuppner h, dirsch vm, atanasov ag. natural product agonists of peroxisome proliferator-activated receptor gamma (pparÎ³): a review. biochem pharmacol. 2014 jul 29. pii: s0006-2952(14)00424-9. doi: 10.1016/j.bcp.2014.07.018. pubmed pmid 25083916. ==plant physiology==  the flowers of the female plant are arranged in racemes and can produce hundreds of seeds. male plants sh
Cannabis Crops_originating_from_Asia Entheogens Euphoriants Flora_of_Central_Asia Hemp Invasive_plant_species_in_the_United_States Medicinal_plants_of_Asia Phytoremediation_plants Plants_described_in_1753 Plants_used_in_traditional_Chinese_medicine Plants_with_sequenced_genomes Psychoactive_drugs