Pectis sinaloensis Fern.

Pectis sinaloensis Fernald, Proc. Am. Acad. 33: 69. 1897
A diffuse annual; stem 0.5-3 dm. high, glabrous or hirtellous; leaves oblanceolate or oblanceolate-oblong, mucronate, 1-2 cm. long, 2-S mm. wide, entire, paler beneath, with 1 or 2 pairs of bristles near the base; glands scattered; heads solitary, terminal or in the forks; pedimcles 2.5-6 cm. long; involucre turbinate, 4-5.5 mm. high and as broad; bracts 7-10, linear, more or less pubescent at the tips; ray-fiowers 7-10; ligules oblong, 4-5 mm. long, yellow; disk-flowers 20-30; corollas 3.5 mm. long; achenes about 3.5 mm. long, sparingly appressedpubescent or glabrate; squamellae of the disk-flowers 5 or 6, those of the ray-flowers mostly 2, with a paleaceous lanceolate lacerate base, often more or less splitting away from the awn, which fully equals the achene in length, or some of the squamellae, especially in the ray-flowers, awnless and short.
Type locality: Mazatlan, Sinaloa. Distribution: Sinaloa and Tepic.