Cannabis sativa L. Marijuana
Marijuana has a long history as an intoxicant. Its seeds are a source of oil, producing all the amino acids needed for human life, and are gradually becoming more widely used in foods. This species of marijuana produces fibers that are used to create rope. Identification: The palmlike shape of marijuana leaves has become iconic. Plants reach 16′ (5 m) in height. Leaves are up to 4″ (10 cm) long and ½″ (1.5 cm) wide. The small white flowers are inconspicuous. Only this species is suitable for rope production. Both this and C. indica are used as intoxicants. Edibility: Marijuana's primary psychoactive ingredient, THC (Δ⁹-tetrahydrocannabinol), survives cooking and is often eaten as an alternative to smoking. So the leaves and flowers are edible, but not a practical food source unless you are out of work or independently wealthy. Marijuana seeds, which are almost free of THC, are a minor but increasingly popular food source. Medical: Marijuana's ability to stimulate the appetite has been found to reduce symptoms of nausea in cancer patients undergoing chemotherapy or suffering from other illnesses. Some states have legalized the use of "medical marijuana." The colorful insect in photo 3 is a leafhopper called a versute sharpshooter (Graphocephala versuta). These little guys have a fondness for marijuana. References:
Online References:
Www.neatorama.com (Unbelievably cool electron microscope photos) The South African National Biodiversity Institute's web site, plantzafrica.com Kansas Wildflowers and Grasses The Virginia Tech Weed Identification Guide Plants for a Future, a resource and information centre for edible and otherwise useful plants Medical Marijuana ProCon.org (Cannabis sativa vs. C. indica)
Cannabis sativa description by Thomas H. Kent, last updated 17 Oct 2023. |
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