Herbs biennial or rarely perennial, 40-80(-110) cm tall, pubescent with simple and forked trichomes. Stems erect, simple basally, often branched above, eglandular and often glabrous distally. Basal leaves withered by flowering. Middle and upper cauline leaves narrowly oblong, lanceolate, or broadly ovate, (2-)4-15(-20) × (0.4-)0.8-4(-6) cm, shortly petiolate, pubescent with simple and forked trichomes, base cuneate, margin denticulate or entire, apex acute or acuminate. Fruiting pedicels divaricate or ascending, (0.5-)0.7-1.7(-2.5) cm, eglandular. Sepals narrowly oblong, 5-8 × 1.5-2 mm. Petals deep purple, lavender, or white, obovate, (1.1-)1.5-2(-2.2) cm × 3.5-9 mm, apex rounded; claw 6-12 mm. Filaments 2.5-6 mm; anthers linear, 2.5-4 mm. Fruit terete, (4-)6-10(-14) cm × 2-2.5 mm; valves glabrous, constricted between seeds. Seeds oblong, (2.5-)3-4 × 1-1.5 mm. Fl. and fr. May-Sep. 2n = 24.

Source: [
• 1
]. 

Stems unbranched basally, often branched distally, 4-8(-11) dm, often eglandular, glabrous distally. Basal leaves withered by flowering, long-petiolate. Cauline leaves short-petiolate; blade narrowly oblong, lanceolate, or broadly ovate, (2-)4-15(-20) cm × (4-)8-40 (-60) mm, base cuneate, margins denticulate or entire, apex acute or acuminate, surfaces pubescent. Fruiting pedicels (5-)7-17(-25) mm. Flowers: sepals 5-8 × 1.5-2 mm; petals (13-)15-20(-22) × 3.5-9 mm, claw 6-12 mm; filaments 2.5-6 mm; anthers 2.5-4 mm. Fruits (4-)6-10(-14) cm × 2-2.5 mm. Seeds (2.5-)3-4 × 1-1.5 mm. 2n = 24.

Source: [
• 2
]. 

"Erect biennial or perennial 5–10 dm, often branched above; lvs lanceolate or deltoid-lanceolate, short-petioled or sessile, remotely and sharply denticulate, pubescent above with simple hairs, below chiefly with branched hairs; sep ± pubescent, fls fragrant; pet purple, varying to pink or white, 2–2.5 cm; frs 5–10 cm, somewhat constricted between the seeds; 2n=16, 24, 26, 28, 32. An old-fashioned ornamental, escaped along roads and in open woods and moist bottomlands; Que. and N.S. to Mich. and Io., s. to Ga. and Ky. May, June."

Source: [
• 3
].