Datura stramonium L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Coarse, heavy-scented, inconspicuously puberulent annual to 1.5 m, often divaricately branched; lvs petiolate, with large, coarsely few-toothed or sublobate blade to 2 × 1.5 dm; cal 3–5 cm, strongly prismatic and narrowly 5-winged, unequally 5-toothed, the persistent base 4–6 mm and spreading to reflexed; cor white or anthocyanic, 7–10 cm, the limb 3–5 cm wide, shallowly 5-lobed, each lobe with a slender, projecting tooth to 1 cm; fr erect, ovoid, 3–5 cm, generally covered with short prickles, the lower prickles often shorter than the upper (or the fr smooth); 2n=24. Dry soil and waste places; widespread in temperate and warm regions, perhaps of American origin. June–Aug. (D. tatula, with anthocyanic fls)