- Agriculture, Forestry & Soils
- Field crops, grasses, plant fibers, spices, tree crops, herbs
Strausbaugh, Perry D. Department of Botany, West Virginia University, Morgantown, West Virginia.
Core, Earl L. Department of Biology, West Virginia University, Morgantown, West Virginia.
Last reviewed:February 2018
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The name (Spanish in origin) for the dried leaves, stems, seeds, and flowering tops of the hemp plant, Cannabis sativa, which can be smoked in cigarette form or in a pipe. Marijuana is the Spanish-derived name for the dried leaves, stems, seeds, and flowering tops of the hemp plant (Cannabis sativa; family Cannabaceae or Cannabinaceae) [see illustration]. For thousands of years, humans have consumed marijuana (in edible, smokeable, and vaporized forms) because of its psychoactive effects (the narcotic ingredients of marijuana have stimulating effects) and its purported medical efficacies. Despite sharp legal restrictions in most nations, the use of marijuana has not been eliminated. In fact, marijuana remains as the most common illicit drug in the world. After smoking two or three marijuana cigarettes, the experienced smoker often has a feeling of well-being and increased power and ability. After excessive amounts of the drug, illusions are often common, along with pleasing, fanciful hallucinations. Sometimes, the excessive user experiences disorientation and even delirium. See also: Addiction and Addictive disorders; Hallucination; Hemp; Narcotic; Psychotomimetic drugs; Rosales
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