Portal:Cannabis

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Introduction

Common hemp

Cannabis (/ˈkænəbɪs/) is a genus of flowering plants in the family Cannabaceae. The number of species within the genus is disputed. Three species may be recognized: Cannabis sativa, C. indica, and C. ruderalis. Alternatively, C. ruderalis may be included within C. sativa, all three may be treated as subspecies of C. sativa, or C. sativa may be accepted as a single undivided species. The genus is widely accepted as being indigenous to and originating from Asia.

The plant is also known as hemp, although this term is often used to refer only to varieties of Cannabis cultivated for non-drug use. Cannabis has long been used for hemp fibre, hemp seeds and their oils, hemp leaves for use as vegetables and as juice, medicinal purposes, and as a recreational drug. Industrial hemp products are made from cannabis plants selected to produce an abundance of fibre. Various cannabis strains have been bred, often selectively to produce high or low levels of tetrahydrocannabinol (THC), a cannabinoid and the plant's principal psychoactive constituent. Compounds such as hashish and hash oil are extracted from the plant. (Full article...)

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Cannabinoid hyperemesis syndrome (CHS) is recurrent nausea, vomiting, and cramping abdominal pain that can occur due to prolonged, high-dose cannabis use. These symptoms may be relieved temporarily by taking a hot shower or bath. Complications are related to persistent vomiting and dehydration which may lead to kidney failure and electrolyte problems.

Weekly cannabis use is generally required for the syndrome to occur; synthetic cannabinoids can also cause CHS. The underlying mechanism is unclear, with several possibilities proposed. Diagnosis is based on the symptoms, as well as the history of cannabis use (including a urine screen test if necessary). The condition is typically present for some time before the diagnosis is made. (Full article...)

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Cannabis flowers at a cannabis dispensary

General images

The following are images from various cannabis-related articles on Wikipedia.

Image 1Top of Cannabis plant in vegetative growth stage (from Cannabis)
Image 2Cannabis sativa from Vienna Dioscurides, AD 512 (from History of cannabis)
Image 3A dried bud, typical of what is sold for recreational use
Image 4American medical hashish (from Medical cannabis)
Image 5A hemp field in Côtes-d'Armor, Brittany, France, which is Europe's largest hemp producer as of 2022 (from Hemp)
Image 6Cannabis Museum in Amsterdam (from Cannabis)
Image 7Whole hemp seeds (from Hemp)
Image 8Cannabis sativa stem longitudinal section (from Cannabis)
Image 9A thicket of wild cannabis in Islamabad, Pakistan (from Cannabis)
Image 10Dried hemp stalks displayed at the International Hemp Fair in Vienna (from Hemp)
Image 11Cannabis sativa from Vienna Dioscurides, 512 AD (from Hemp)
Image 12Cannabis leaf pictured in the coat of arms of Kanepi Parish (from Cannabis)
Image 13Cannabis sativa (from Cannabis strain)
Image 14Cannabis indica (from Cannabis strain)
Image 15Hemp straw animal bedding (from Hemp)
Image 16Hemp and bead jewelry (from Hemp)
Image 17Hemp seed (from Hemp)
Image 18Cannabis as illustrated in Köhler's Book of Medicinal Plants, 1897 (from Medical cannabis)
Image 19Hemp rope (from Hemp)
Image 20The Chinese character for hemp (麻 or má) depicts two plants under a shelter. Notably, the same character also means "numb". Cannabis cultivation dates back at least 3000 years in Taiwan. (from History of cannabis)
Image 21The number of publications about marijuana/cannabis according to Web of Science (from History of cannabis)
Image 22Blue Dream (from Cannabis strain)
Image 23Cannabis indica fluid extract, American Druggists Syndicate, pre-1937 (from History of cannabis)
Image 24A flowering cannabis plant (from Cannabis strain)
Image 25Dense raceme of female flowers typical of drug-type varieties of Cannabis (from Cannabis)
Image 26The Ebers Papyrus (c. 1550 BCE) from Ancient Egypt has a prescription for medical marijuana applied directly for inflammation. (from Medical cannabis)
Image 27Legal status of (whole-plant) medical cannabis worldwide----
Legal as authorized by a physician
Legal for any use (no prescription required)
----See also countries that have decriminalized or where enforcement is limited. (from Medical cannabis)
Image 28White Widow (from Cannabis strain)
Image 29Comparison of physical harm and dependence regarding various drugs (from Cannabis)
Image 30The use of cannabis, at least as fiber, has been shown to go back at least 10,000 years in Taiwan. "Dà má" (Pinyin pronunciation) is the Chinese expression for cannabis, the first character meaning "big" and the second character meaning "hemp". (from Medical cannabis)
Image 31Underside of Cannabis sativa leaf, showing diagnostic venation (from Cannabis)
Image 32Male Cannabis flower buds (from Cannabis)
Image 33A male hemp plant (from Cannabis)
Image 34Cannabis female flower with visible trichomes (from Cannabis)
Image 35Cannabis growing as weeds at the foot of Dhaulagiri, Nepal (from Cannabis)
Image 36Evolution of cultivated cannabis strains. The cultivar, Cannabis ruderalis, still grows wild today. (from Medical cannabis)
Image 37Relative size of varieties of Cannabis (from Cannabis)
Image 38Biodiesel sample (from Hemp)
Image 39Harvesting hemp in the USSR, 1956 (from Hemp)
Image 40Medical marijuana dispensary in Denver, Colorado (from Medical cannabis)
Image 41Sour Diesel (from Cannabis strain)
Image 42An advertisement for cannabis americana distributed by a pharmacist in New York in 1917 (from Medical cannabis)
Image 43A macro image of hemp seeds (from Hemp)
Image 44Hemp being grown in Oregon in 2020 (from Hemp)
Image 45Relative size of cannabis types (from Cannabis strain)
Image 46Cannabis indica fluid extract, American Druggists Syndicate, pre-1937 (from Medical cannabis)
Image 47Cannabis ruderalis (from Cannabis)
Image 48Bhang eaters from India c. 1790. Bhang is an edible preparation of cannabis native to the Indian subcontinent. It has been used in food and drink as early as 1000 BC by Hindus in ancient India. (from History of cannabis)
Image 49The variety of appearances for cannabis. Only C. sativa (left) is suited for industrial hemp, but it also has medicinal varieties. (from Hemp)
Image 50Cannabis ruderalis (from Cannabis strain)
Image 51Illustrating various forms of medicinal cannabis (from Medical cannabis)
Image 52Hulled hemp seeds (from Hemp)
Image 53Japanese Shinto shrine with rope made of hemp (from Hemp)

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Did you know...

... that actor Tom Cruise (pictured) does not endorse a potent strain of cannabis called Tom Cruise Purple?
... that the Oregon Cannabis Tax Act proposes that two percent of proceeds from the sale of cannabis promote industrial hemp biodiesel, fiber, protein and oil?
... that Initiative 1068 was filed in January 2010 by Seattle activists hoping to remove criminal penalties from the adult use, possession and cultivation of marijuana in Washington?

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“

Why use up the forests which were centuries in the making and the mines which required ages to lay down, if we can get the equivalent of forest and mineral products in the annual growth of the hemp fields?

”

— Henry Ford

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WikiProjects

WikiProject Cannabis	WikiProject Plants	WikiProject Medicine

WikiProject Drug Policy	WikiProject Psychoactive and Recreational Drugs	WikiProject Alternative medicine