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Various plants are used around the world for smoking due to various chemical compounds they contain and the effects of these chemicals on the human body. This list contains plants that are smoked, rather than those that are used in the process of smoking or in the preparation of the substance.
When the production of psychoactive cannabinoids is sought, female plants are grown separately from male plants to induce parthenocarpy in the female plant's fruits (popularly called "sin semilla" which is Spanish for "without seed" ) and increase the production of cannabinoid-rich resin. [18] In soil, the optimum pH for the plant is 6.3 to 6.8.
Used by Chinese residents of Mexico during the early 20th century as a legal substitute for opium and currently smoked as a marijuana substitute. [citation needed] Ergine. Argyreia nervosa (Hawaiian Baby Woodrose) Seeds contain ergine (also known as LSA), often 50-150X the amounts found in Ipomoea violacea. LSA is a hallucinogen. [121] Thujone
An edible seed [n 1] is a seed that is suitable for human or animal consumption. Of the six major plant parts, [ n 2 ] seeds are the dominant source of human calories and protein . [ 1 ] A wide variety of plant species provide edible seeds; most are angiosperms , while a few are gymnosperms .
Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known by several slang terms, such as marijuana, pot or weed. 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 .
In the fruit-ripening stage, a 4–13 cm (2–5 in) long, 1–2 cm (3 ⁄ 8 – 3 ⁄ 4 in) wide, unwinged, leguminous fruit develops. There is a ridge along its length and the husk is covered in loose, orange hairs that cause a severe itch if they contact skin. [4] [5] The pods carry up to seven seeds, which are shiny black or brown drift seeds.
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Solanum mauritianum is a small tree or shrub native to South America, including Northern Argentina, Southern Brazil, Paraguay and Uruguay. [1] Its common names include earleaf nightshade [2] (or "ear-leaved nightshade"), woolly nightshade, flannel weed, bugweed, tobacco weed, tobacco bush, wild tobacco and kerosene plant.