Biennial or short-lived perennial, glabrous and glaucous throughout, to 2 m; lvs entire, the lower obovate-oblong, 2–4 cm wide, the upper progressively shorter but scarcely narrower, becoming broadly ovate to rotund, subcordate and somewhat clasping; bracteal lvs similar but smaller; fls 2–4 per axil, short-pediceled in a racemiform infl 1.5–3 dm; cal at anthesis 7–11 mm; cor 3.5–5 cm, pale purple outside, glabrous inside and out, widely dilated; fr 1.5–2 cm; seeds 2.5–4 mm; 2n=16. Dry prairies and barrens; Wis. to N.D. and Wyo., s. to Ill., nw. Mo., and Tex. May, June. (P. bradburyi)
Can be grown by cuttings or seedlings. Seeds needs stratification.
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