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Cannabis
''Cannabis'' () 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 selecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis Plants In Front Of The Dhaulagiri Summit
''Cannabis'' () 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'', ''Cannabis indica, C. indica'', and ''Cannabis ruderalis, 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 (ecology), indigenous to and originating from Asia. The plant is also known as hemp, although this term is often used to refer only to Variety (botany), varieties of ''Cannabis'' Cannabis cultivation, cultivated for non-drug use. Cannabis has long been used for hemp fibre, hemp seeds and their hemp oil, oils, hemp leaves for use as leafy vegetable, vegetables and as hemp juice, juice, medical cannabis, medicinal purposes, and Cannabis (drug), as a recreational dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis (drug)
Cannabis, also known as marijuana among other names, is a psychoactive drug from the cannabis plant. Native to Central or South Asia, the cannabis plant has been used as a drug for both recreational and entheogenic purposes and in various traditional medicines for centuries. Tetrahydrocannabinol (THC) is the main psychoactive component of cannabis, which is one of the 483 known compounds in the plant, including at least 65 other cannabinoids, such as cannabidiol (CBD). Cannabis can be used by smoking, vaporizing, within food, or as an extract. Cannabis has various mental and physical effects, which include euphoria, altered states of mind and sense of time, difficulty concentrating, impaired short-term memory, impaired body movement (balance and fine psychomotor control), relaxation, and an increase in appetite. Onset of effects is felt within minutes when smoked, but may take up to 90 minutes when eaten. The effects last for two to six hours, depending on the amount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Cannabis
Medical cannabis, or medical marijuana (MMJ), is cannabis and cannabinoids that are prescribed by physicians for their patients. The use of cannabis as medicine has not been rigorously tested due to production and governmental restrictions, resulting in limited clinical research to define the safety and efficacy of using cannabis to treat diseases. Preliminary evidence has indicated that cannabis might reduce nausea and vomiting during chemotherapy and reduce chronic pain and muscle spasms. Regarding non-inhaled cannabis or cannabinoids, a 2021 review found that it provided little relief against chronic pain and sleep disturbance, and caused several transient adverse effects, such as cognitive impairment, nausea, and drowsiness. Short-term use increases the risk of minor and major adverse effects. Common side effects include dizziness, feeling tired, vomiting, and hallucinations. Long-term effects of cannabis are not clear. Concerns include memory and cognition problem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis Strain
''Cannabis'' strains are either pure or hybrid varieties of the plant genus ''Cannabis'', which encompasses the species '' C. sativa'', '' C. indica'', and '' C. 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 drug. 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. The ''Cannabis'' strains referred to in this article are primarily those varieties with recreational and medicinal use. These varieties have been cultivated to contain a high percentage of cannabinoids. Several varieties of ''cannabis'', known as hemp, have a very low cannabinoid content, and are instead grown for their fiber and seed. Major variety types Taxonomic paradigm The two species of the ''Cannabis'' genus that are most commonly grown are ''Cannabis indica'' and '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis Sativa
''Cannabis sativa'' is an annual herbaceous flowering plant indigenous to Eastern Asia, but now of cosmopolitan distribution due to widespread cultivation. It has been cultivated throughout recorded history, used as a source of industrial fiber, 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 Carl Linnaeus in 1753. The word ''sativa'' means "things that are cultivated." Plant physiology The flowers of ''Cannabis sativa'' are unisexual and plants are most often either male or female. It is a short-day flowering plant, with staminate (male) plants usually taller and less robust than pistillate (female or male) plants. The flowers of the female plant are arranged in racemes and can produce hundreds of seeds. Male plants shed their pollen and die several weeks prior to seed ripening on the female plants. Under typical conditions with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis Cultivation
This article presents common techniques and facts regarding the cultivation of cannabis, primarily for the production and consumption of its infructescences ("buds" or "flowers"). Cultivation techniques for other purposes (such as hemp production) differ. Botany Cannabis belongs to the genus ''Cannabis'' in the family Cannabaceae. It may include three species, ''Cannabis indica'', '' C. sativa'', and '' C. ruderalis'' ( APG II system), or one variable species. It is typically a dioecious (each individual is either male or female) annual plant. ''C. sativa'' and ''C. indica'' generally grow tall, with some varieties reaching 4 metres, or 13 feet. Female plants produce tetrahydrocannabinol (THC) (up to 31% by weight) as the season changes from summer to autumn. ''C. ruderalis'' is very short, produces only trace amounts of THC, but is very rich in cannabidiol (CBD) an antagonist to THC, which may be 40% of the cannabinoids in a plant. C. ruderalis flowers independentl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemp Seed
Hemp, or industrial hemp, is a botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial or medicinal use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants on Earth. It was also one of the first plants to be spun into usable fiber 50,000 years ago. It can be refined into a variety of commercial items, including paper, rope, textiles, clothing, biodegradable plastics, paint, insulation, biofuel, food, and animal feed. Although chemotype I cannabis and hemp (types II, III, IV, V) are both ''Cannabis sativa'' and contain the psychoactive component tetrahydrocannabinol (THC), they represent distinct cultivar groups, typically with unique phytochemical compositions and uses. Hemp typically has lower concentrations of total THC and may have higher concentrations of cannabidiol (CBD), which potentially mitigates the psychoactive effects of THC. The legality of hemp varies widely among countries. So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemp
Hemp, or industrial hemp, is a botanical class of '' Cannabis sativa'' cultivars grown specifically for industrial or medicinal use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants on Earth. It was also one of the first plants to be spun into usable fiber 50,000 years ago. It can be refined into a variety of commercial items, including paper, rope, textiles, clothing, biodegradable plastics, paint, insulation, biofuel, food, and animal feed. Although chemotype I cannabis and hemp (types II, III, IV, V) are both ''Cannabis sativa'' and contain the psychoactive component tetrahydrocannabinol (THC), they represent distinct cultivar groups, typically with unique phytochemical compositions and uses. Hemp typically has lower concentrations of total THC and may have higher concentrations of cannabidiol (CBD), which potentially mitigates the psychoactive effects of THC. The legality of hemp varies widely among coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis Ruderalis
''Cannabis ruderalis'' is a variety, subspecies, or species of ''Cannabis'' native to Central and Eastern Europe and Russia. It contains a relatively low quantity of psychoactive compound tetrahydrocannabinol (THC) Some scholars accept ''C. ruderalis'' as its own species due to its unique traits and phenotypes which distinguish it from '' C. indica'' and '' C. sativa''; others debate whether ''ruderalis'' is a subdivision under ''C. sativa''. The consensus among plant taxonomical databases, as of 2022, is to consider it ''Cannabis sativa'' var. ''ruderalis''. Description ''Cannabis ruderalis'' is smaller than other species of ''Cannabis'', rarely growing over in height. According to one source, the plants have "thin, slightly fibrous stems" with little branching. The foliage is typically open with large leaves. ''C. ruderalis'' reaches maturity much quicker than other species of ''Cannabis,'' typically 5–7 weeks after being planted from seed. Unli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabis Indica
''Cannabis indica'' is an annual plant species in the family Cannabaceae which produces large amounts of tetrahydrocannabinol (THC) and is cultivated for purposes including hashish in India. The high concentrations of THC provide euphoric effects making it popular for use both as a recreational drug, alternative medicine, and a clinical research drug. Taxonomy In 1785, Jean-Baptiste Lamarck published a description of a second species of ''Cannabis'', which he named ''Cannabis indica''. Lamarck based his description of the newly named species on plant specimens collected in India. Richard Evans Schultes described ''C. indica'' as relatively short, conical, and densely branched, whereas '' C. sativa'' was described as tall and laxly branched. Loran C. Anderson described ''C. indica'' plants as having short, broad leaflets whereas those of ''C. sativa'' were characterized as relatively long and narrow. ''C. indica'' plants conforming to Schultes's and Ande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabinoid
Cannabinoids () are several structural classes of compounds found in the cannabis plant primarily and most animal organisms (although insects lack such receptors) or as synthetic compounds. The most notable cannabinoid is the phytocannabinoid tetrahydrocannabinol (THC) (delta-9-THC), the primary intoxicating compound in cannabis. Cannabidiol (CBD) is a major constituent of temperate Cannabis plants and a minor constituent in tropical varieties. At least 113 distinct phytocannabinoids have been isolated from cannabis, although only four (i.e., THCA, CBDA, CBCA and their common precursor CBGA) have been demonstrated to have a biogenetic origin. It was reported in 2020 that phytocannabinoids can be found in other plants such as rhododendron, licorice and liverwort, and earlier in Echinacea. Phytocannabinoids are multi-ring phenolic compounds structurally related to THC, but endocannabinoids are fatty acid derivatives. Nonclassical synthetic cannabinoids (cannabimimetics) include ami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetrahydrocannabinol
Tetrahydrocannabinol (THC) is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C21H30O2) describes multiple isomers, the term ''THC'' usually refers to the Delta-9-THC isomer with chemical name (−)-''trans''-Δ9-tetrahydrocannabinol. THC is a lipid found in cannabis and, like most pharmacologically active secondary metabolites of plants, it is assumed to be involved in the plant's evolutionary adaptation, putatively against insect predation, ultraviolet light, and environmental stress. THC was first discovered and isolated by Israeli chemist Raphael Mechoulam in Israel in 1964. It was found that, when smoked, THC is absorbed into the bloodstream and travels to the brain, attaching itself to endocannabinoid receptors located in the cerebral cortex, cerebellum, and basal ganglia. These are the parts of the brain responsible for thinking, memory, pleasure, coordina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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