Plant: annual herb; glabrate to pubescent, with a short, weak tap root Leaves: ovate, oblong to elliptical, 5-21 cm long, 4-15 cm wide, usually puberulent along veins, later glabrescent, sinuate-dentate to -lobed; apex acute; base cuneate to subcordate; petioles usually about half as long as blade Flowers: with calyx 3-6 cm long, the teeth lanceolate to acuminate, (3-)5-7(-10) mm long; corolla white, tinged with lavender or purple, the tube 5-10 cm long, the limb 3-5 cm wide, the acumens subulate, 4-8 mm long Fruit: FRUITS erect, dehiscing along 4 sutures to base, green, ovoid to ellipsoid, 3-5 cm long, with 100-300 spines, these 0.8-1.5 mm long; pericarp glabrate to puberulent; persistent calyx base reflexed; SEEDS black, reniform to discoid, 3-4 mm long, 2-3.5 mm wide, rugose Misc: Roadsides and waste grounds; 950-1750 m (3200-5500 ft); Apr-Nov REFERENCES: Bye, Robert. 2001. Solanaceae. JJ. Ariz. – Nev. Acad. Sci. Volume 33(1).