Stevia sphacelata Nuttall ex Torrey, Ann. Lyceum Nat. Hist. New York 2: 214. 1827

Annuals, 10–90 cm. Stems usually proximally hispid, distally stipitate-glandular. Leaf blades broadly to narrowly lanceolate, 30–90 × 3–20 mm. Involucres broadly to narrowly turbinate. Phyllaries 9–12+ × 1.5–3 mm, ± equal, ± scabrous to hispid and/or stipitate-glandular. Ray florets 3–5; corollas 15–25 mm, laminae 5–12 mm. Disc florets 15–35; corollas ± actinomorphic, 10–14 mm, throats ± funnelform, shorter than lobes. Cypselae 6–9 mm; pappus scales of inner cypselae 7–9 mm. 2n = 24.

Flowering summer–fall. Sandy soils; 1000–1800 m; Colo., Kans., Nebr., N.Mex., Okla., Tex.; Mexico (Chihuahua).