Haploesthes greggii A. Gray

Haploesthes greggii A. Gray, Mem. Am. Acad. II. 4: 109. 1849
Aplopappus texanus Coult. Contr. U. S. Nat. Herb. 1: 40. 1890.
An undershrub, woody at the base, branched below, 2-4 dm. high; herbaceous stems glabrous, striate, light-green, fastigiately branched; leaves opposite, filiform, 2-5 cm. long, fleshy, with connate enlarged scarious bases; heads paniculate-cymose, numerous, radiate; involucre campanulate, 4 mm. high; bracts 5, overlapping, broadly oval, rounded at the apex, striate; ray-flowers 3-5, the corolla-tube 2.5-3 mm. long, the ligule oval, yellow, 1.5-2 mm. long, 2-3-toothed; disk-corollas 4.5 mm. long, the tube 2 mm. long, the throat funnelform, the lobes lanceolate; achenes sparingly hairy, 1.5 mm. long.
Type locality: Valley near Ciefiega Grande, Coahuila.
Distribution: Kansas and eastern Colorado to Texas, Coahuila, and Chihuahua.