It is an erect, coarse and glabrous or farinose-puberulous annual herb about 60 to 120 cm high. Leaves are stalked, 15.0 to 17.0 cm long, ovate, deeply toothed or sinuate and pale-green. Flowers are large and purplish or violet coloured. Calyx is long, tubular and herbaceous. Corolla is long and funnel-shaped with wide mouth. The stamens are attached near the base of tube. Ovary is two-or spuriously four-celled. The capsules are ellipsoid, 4.0 to 7.0 cm long and spinous. Seeds are numerous, compressed and rugose.

The leaves, flowering tops and seeds are anodyne, antiasthmatic, antispasmodic, hallucinogenic, hypnotic, mydriatic and narcotic; kills insects (plant extract); antidandruff (fruit); narcotic (seed); intoxicating (which can be fatal) and sedative (young fruit); anticholinergic, cyanogenetic, expectorant, reduces fever, fumitory, fungicidal, hypnotic, poisonous.

Floridata
Datura stramonium
Botanical.com

Scopolamine, daturine, hyoscine, hyoscyamine, atropine, mescaline, apophyoscine, skimmianine, tropine, apoatropine, alpha and beta-belladonine and 2.6-dihydroxytropane.

For boils and testicle enlargement (leaf); relieving pain and headaches (roasted leaves); earache (flower); asthma (inhalation of burning leaves) and other pulmonary and respiratory ailments (such as pneumonia, cough and severe chest colds); used internally in the treatment of asthma and Parkinson's disease, excess causes giddiness, dry mouth, hallucinations and coma (plant); externally, as a poultice or wash in the treatment of fistulas, abscesses wounds and severe neuralgia (plant).

Since this plant has toxic properties, high dosages can lead to cerebral depression, followed by a coma; it should not be used when pregnant, with prostate problems tachycardia, glaucoma and with "depressant" medications.

Chandel et al., Biodiversity in Medicinal and Aromatic Plants in India.