Porophyllum amplexicaule Engelm. ex A. Gray

Porophyllum amplexicaule Engelm.; A. Gray, PI. Wright 1: 120. 1852.
A perennial, fruticose at the base; stem 5 dm. high or more, glabrous, terete, erect, more or less glaucous; leaves ovate-lanceolate, semi-amplexicaul, acute, fleshy, 2-3 cm. long; heads solitary at the end of the branches; peduncles 4-6 cm. long, abruptly thickened under the head; involucre turbinate, about 8 mm. high and 15-20 mm. broad; bracts 8-10, broadly linear, acuminate, but with a blunt apex; glands linear and oblong, irregularly disposed in 4 lines, 2 near the midrib and 2 along the margins; corollas about 7 ram. long; tube 3 mm. long; throat narrow, tubular-trumpet-shaped; lobes lanceolate; achenes 7 mm. long, hispidulous; pappus 7 mm. long, brown; bristles scabrous-hispidulous.
Type locality: Near Mesillas, Coahuila.
Distribution: Coahuila.