Pink slender-thoroughwort

Eupatorium incarnatum Walter, Fl. Carol., 200. 1788

Plants 30–120(–200) cm. Stems lax, sprawling or scandent. Leaves: petioles (0.5–)1–3.5(–4) cm; blades triangular-deltate, (1–)2–5(–7) × (1–)1.5–3.5(–5) cm, bases usually truncate to cordate, sometimes obtuse, margins coarse­ly serrate to crenate-serrate, apices acute to acuminate. Involucres 4–5 mm. Phyllaries: outer lanceolate, inner lanceolate to narrowly oblong-lanceolate, glabrous or sparsely puberulent, apices usually acute to attenuate, sometimes rounded. Corollas usually pink-purple or whitish with pink to lilac lobes, rarely all white. Cypselae 1.8–2.8 mm, usually sparsely strigoso-hirtellous, sometimes glabrate. 2n = 20.

Flowering Oct–Dec. Woodlands, thickets, moist soil, roads, ditches, stream banks, bottomlands, swamps, depressions, cedar glades; 10–200 m; Ala., Ark., Fla., Ga., Ill., Ind., Ky., La., Miss., Mo., N.C., Ohio, Okla., S.C., Tenn., Tex., Va., W.Va.; Mexico.

Fleischmannia incarnata was reported to occur in "s. Ariz.;" the report almost certainly was based on misidentification of F. sonorae.