PLANT: Annual or short-lived perennial herb to 70 cm tall, without tubers or stolons, unarmed; herbage moderately to densely villous, with gland-tipped hairs, some multicellular; stems terete to angled. LEAVES: alternate to sub-opposite, simple, lance-ovate to lance-elliptic, 2–6 cm long, 1–3 cm wide; margin entire to coarsely toothed; base truncate to attenuate; apex rounded to acuminate. INFLORESCENCE: umbel-like racemes, lateral, borne between nodes or sometimes at nodes opposite leaves, (2–)4–8(–12)-flowered; peduncle 5–30 mm long. FLOWERS: actinomorphic; pedicel 2–15 mm long; calyx 1–3 mm long, the lobes lanceolate to rounded, reaching about 1/4 to 2/3 the length of the tube; corolla actinomorphic, rotate to weakly campanulate (this sometimes not obvious in dried specimens), white or white tinged with purple, with basal brownish star, 3–6 mm in diam., with broadly triangular lobes; style as long as stamens or up to 1 mm longer,pubescent ± half its length; stamens of ± equal length, 1.5–2(–2.5) mm long; anthersconnivent; filaments less than 1 mm long. FRUITS: orbicular, 6–9 mm wide, dark green to purple to brownish-green, at least lower half of mature fruit covered with enlarged calyx; sclerotic granules 0–5; seeds 1–2 mm wide, orbicular, orange-brown in dried specimens. [S. sarrachoides Sendtn. and S. villosum (L.) Mill. have been misapplied]. NOTES: Infrequent in disturbed areas: Coconino, Maricopa, Navajo, Yavapai cos. (Fig. 2E); 900–2100 m (~3000–7000 ft); Jun–Oct; throughout N. Amer. excluding se states; introduced from S. Amer. REFERENCES: Chiang, F. and L.R. Landrum. Vascular Plants of Arizona: Solanaceae Part Three: Lycium. CANOTIA 5 (1): 17–26, 2009.