Wright’s snakeroot

Eupatorium wrightii A. Gray, Smithsonian Contr. Knowl. 3(5): 87. 1852

Shrubs, 50–150 cm. Stems erect, puberulous. Leaves opposite proximally, alternate on distal ¹/3–¹/2 of stem; petioles narrowly winged, 3–5(–8) mm; blades ovate to deltate-ovate, mostly 1–2 × 0.5–1.5(–2) cm, bases truncate to cuneate or attenuate, margins entire or shallowly crenate, apices acute to blunt or obtuse, abaxial faces gland-dotted. Heads clustered. Peduncles 1–3 mm, puberulent. Involucres 3.5–4.5 mm. Phyllaries: apices acute, abaxial faces puberulent. Corollas pinkish white to pink, glabrous. Cypselae sparsely hispidulous.

Flowering (Jul–)Aug–Oct(–Nov). Limestone slopes, ledges, alluvium, in brushy vegetation; 1300–2200 m; Ariz., N.Mex., Tex.; Mexico.