Gaillardia mexicana A. Gray

Gaillardia mexicana A. Gray (; S. Wats. Proc. Am. Acad. 18: 109 hyponym. 1882), Proc. Am. Acad. 19: 34. 1883.
Gaillardia pulchella var. A. Gray, PI. Wright. 1: 120. 1852.
A caulescent perennial; stems 3-5 dm. high, puberulent, often tinged with red, branched below; leaves lanceolate, 2-4 cm. long, rather firm, puberulent, the lower short-petioled and occasionally with oblong lobes, the upper entire and sessile; peduncles 1.5-3 dm. long; involucral bracts lance-subulate, attenuate, 7-10 mm. long; fimbrillae of the receptacle filiform-subulate, as long as the achenes; ray-flowers 10-15, neutral, or wanting; ligules purple, 7-9 mm. long, deeply cleft; disk 12-15 mm. broad, purple; corollas about 5 mm. long; tube very short; throat elongate-campanulate; lobes deltoid, glandular-puberulent; achenes long-hirsute below, glabrous on the upper part; squamellae lanceolate; body 2 mm. long, produced into an awn fully 3 mm. long.
Type locality: Sierra Madre, south of Saltillo. Distribution: Western Texas, Coahuila, and San Luis Potosi.