Datura stramonium (Jimson weed)

FloraFinder uses cookies only for correct operation. More info. Okay

Datura stramonium L.

Jimson weed, devil’s trumpet, devil's weed, thorn apple, tolguacha, Jamestown weed, stinkweed, locoweed, datura, pricklyburr, devil’s cucumber, hell’s bells, moonflower, Jimsonweed

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Solanales	Potatoes, eggplants, tomatoes, peppers, tobacco, petunias, sweet potatoes, morning glories, many others
Family	Solanaceae	Nightshade or potato family
Genus	Datura	From dhatura, an ancient Hindu word for a plant
Species	stramonium	Spiky-fruited, and a name used by Theophrastus for the thorn-apple

About plant names...

9/1/2008 · By Jacquelyn Boyt

Flowers are trumpet-shaped when fully opened, but often look more like this.

Datura stramonium has many faces. It's a weed! It's a poison! It's a medicine! It's a recreational drug! It's a pretty flower! It's a munitions dump purifier! "Loco weed" refers to this species' ability to induce delirium and hallucinations in people, but there are unrelated plants also called locoweeds, including members of Oxytropis and Astralagus in North America, that are toxic to animals. Sources differ as to whether jimsonweed is native to North America or imported from the Old World. "Jimsonweed" is a corruption of "Jamestown weed"—read on to find out what happened to a group of Jamestown settlers who sampled the plant.

Identification: This non-woody bush grows to 3-5' (91-152 cm) in height, with stiff, hollow stems that are green or purple. Toothed, wrinkly leaves are 3-8" (7.6-20 cm) × 1-6" (2.5-15 cm). Flowers are large, attractive, trumpet-shaped, and pleasant-smelling, though the plant is malodorous. Flowers are 2½-3½" (6.3-8.9 cm) long, white, cream-colored, purple, or white with a purple center. They usually open only partially, unfurling to produce a spiral, pinwheel-like effect. Fruits are a densely thorny egg-shaped capsule 1" (2.5 cm) in diameter, consisting of four segments, and containing many dark brown or black seeds.

Edibility: Poisonous Skull & Crossbones All parts of this plant contain a witch's brew of tropane alkaloids, a mixture that varies in potency by as much as a factor of two, and a mixture that changes depending upon the age of the plant. These alkaloids can cause poisoning, semi-blindness or impaired vision (lasting a week or more), depressed breathing, delirium and fever, loss of short term memory, and hallucinations. In addition to many other symptoms, it is a vasodilator; it dries mucous membranes uncomfortably; and it causes tachycardia (very fast heartbeats). Sometimes the leaves are confused with spinach leaves. Animals typically avoid this species because of its strong odor and unpleasant taste.

Medical: Toxic plants, by virtue of the fact that they effect the body at all, can often be adapted for medicinal purposes, and this species is no exception. Medications derived from its several active ingredients can treat cholinergenic overdose, urinary tract infections, premenstrual syndrome, heart ailments, and dilate your eyes at eye exams. Historically, scopolamine was used to "treat" pregnant women during labor. It wasn't much help, but the short term amnesia it created erased memories of the pain.

Jimsonweed is sometimes used as a recreational drug, but the potency varies and the threshold between a safe dose and a lethal dose is unpredictable. It is often described as a deliriant rather than a hallucinogen, since it induces very unpredictable behavior. In anthropologist Carlos Castaneda's books, the first of which is The Teachings of Don Juan: A Yaqui Way of Knowledge, he describes his experiences with this drug, given to him by a Yaqui Indian shaman.

Here is an account by Robert Beverly of Jamestown settlers' experiences, from The History and Present State of Virginia, in Four Parts:

The James-Town Weed (which resembles the Thorny Apple of Peru, and I take to be the Plant so call'd) is supposed to be one of the greatest Coolers in the World. This being an early Plant, was gather'd very young for a boil'd Salad, by some of the Soldiers sent thither, to pacifie the Troubles of Bacon; and some of them eat plentifully of it, the Effect of which was a very pleasant Comedy; for they turn'd natural Fools upon it for several Days: One would blow up a Feather in the Air; another wou'd dart Straws at it with much Fury; and another stark naked was sitting up in a Corner, like a Monkey, grinning and making Mows at them; a Fourth would fondly kiss, and paw his Companions, and snear in their Faces, with a Countenance more antick, than any in a Dutch Droll. In this frantick Condition they were confined, lest they should in their Folly destroy themselves; though it was observed, that all their Actions were full of Innocence and good Nature. Indeed, they were not very cleanly; for they would have wallow'd in their own Excrements, if they had not been prevented. A Thousand such simple Tricks they play'd, and after Eleven Days, return'd to themselves again, not remembring any thing that had pass'd.

These varieties of Datura have similar ranges and psychoactive effects, and they are often confused:

	You are here Datura stramonium	*Datura wrightii*
Common Name	Jimson weed	angel’s trumpet
Plant	This non-woody bush grows to 3-5' (91-152 cm) in height, with stiff, hollow stems that are *green or purple*. Plant is malodorous.	Angel's trumpet grows in bushes 24-48" (60-121 cm) high, with *grayish-green stems coated with fine hairs*.
Flowers	Flowers are *smaller*, 2½-5" (6.3-12 cm) × 1-2" (2.5-5 cm), trumpet-shaped, fragrant, white, cream-colored, purple, or white with a purple center. They usually open only partially, unfurling to produce a spiral, pinwheel-like effect.	*Large*, 5-9" (12-22 cm) long, fragrant, trumpet-shaped, and white, cream-colored, or purplish. They have several segments, with small points at the edges between them.
Leaves	*Toothed, wrinkly* leaves are 3-8" (7.6-20 cm) × 1-6" (2.5-15 cm), *mostly hairless*.	Alternate, 6" (15 cm) × 4" (10 cm), with *smooth margins* and sometimes slightly wavy edges. The leaves have the unusual property that they are *not symmetric at the base— one side is somewhat larger than the other. Leaf undersides have fine hairs*.
Fruit	Densely thorny egg-shaped capsule 1" (2.5 cm) in diameter, consisting of four segments, and containing many dark brown or black seeds.	Prickly, about 1" (2.5 cm) across.
Range/ Zones
Habitats		Coastal sage scrub, valley grasslands, joshua tree woods, pinyon-juniper woods
Type	Wild	Wild

Explosive Clearing Agent: If your yard should happen to be filled with leftover TNT (yes, the explosive, 2,4,6-trinitrotoluene), you'll be pleased to know that this species has a unique talent for clearing it, by converting it into harmless by-products.

References:

Rätsch, Cristian, The Encyclopedia of Psychoactive Plants: Ethnopharmacology and its Applications, Park Street Press, 1998, p. 208

Online References:

Missouriplants.com

Kansas Wildflowers and Grasses

Wikipedia

The Virginia Tech Weed Identification Guide

Medicinal Plants of the Southwest

Www.erowid.org

Www.holoweb.com

University of California Statewide Integrated Pest Management Program

SEINet—the Southwest Environmental Information Network