Datura wrightii Regel

Annual herb, tomentose with retrorse, non-glandular hairs and some erect, glandular hairs. Mature leaves ovate to angularly ovate, the lamina up to 16 cm long and 10 cm wide, entire or irregularly lobed. Calyx 6–9 cm long, 5–lobed; lobes 10–25 mm long, sometimes incompletely separated. Corolla 14–20 cm long, white, usually tinged with lavender towards margin, 5–lobed; lobes ending in slender point 5–13 mm long. Stamens shortly exserted; anthers 10–14 mm long. Style 15–17 cm long; stigma above level of anthers. Capsule globose, to 3.5 cm diam., deflexed, spiny; spines numerous, sharp, all about equal in length, usually 3–5 mm long; persistent base of calyx to 10 mm long, prominent. Seeds 5–6 mm long, yellow-brown to grey-brown.