New Fl. 2: 59. 1837.
Perennials. Stems simple or branched, 4–25 dm, glabrous, not glaucous. Leaves: petiole 2–3 mm; blade lanceolate to oblong, 15–127 x 4–34 mm, margins entire or serrate, rarely (proximal) pinnatifid, surfaces glabrous. Bracts leaflike, 8–15 x 2–5 mm, margins entire. Pedicels 1–3 mm, glabrous. Flowers: calyx glabrous, tube campanulate, 5–7 mm, lobes lanceolate to narrowly deltate, 5–6 x 2–3 mm, margins entire; corolla tube 19–30 mm, glabrous, lobes 9–11 x 11–16 mm; filaments 12–20 mm, ciliate; style 21–29 mm. Capsules ovoid to pyriform, 8–12 x 6–7 mm, glabrous. 2n = 26.
Phenology: Flowering Jul–Oct.
Habitat: Rocky wooded slopes, mixed hardwoods.
Elevation: 10–1800 m.
Ala., Ga., Ky., Md., Miss., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.
Aureolaria levigata is disjunct in southwestern Mississippi. The affinity between the floras of the Appalachian and Ozark mountains and the loess hills of southwestern Mississippi is well documented (H. R. Delcourt and P. A. Delcourt 1975).