Longstalk Chinchweed

Pectis longipes A. Gray, PI. Wright. 2: 69. 1853
A perennial, with a cespitose slender caudex; stem densely leafy below, 1-2 dm. high, glabrous, ascending; leaves linear, mucronate, thickish, 2-4 cm. long, 1.5-3 mm. wide, with 2-3 pairs of bristles near the base; glands conspicuous, in a single row along each margin; heads solitary at the ends of the branches or in the upper axils; peduncles 6-14 cm. long, slender; involucre campanulate-turbinate, 6-8 mm. high, 8-10 mm. broad; bracts 12-15, linear, plane above, keeled below, acute, bearing a large apical gland; ray-flowers 12-15; ligules yellow, narrowly oblong, 6-8 mm. long, 1.5-2 mm. wide; disk-flowers 40-75; corollas 4-5 mm. long; achenes 4-5 mm long, more or less pubescent-; pappus-bristles of the disk-flowers 20-40, very unequal, capillary, scabrous, the longest 4—6 mm. long; those of the ray-flowers 2, slender, 3-5 mm. long, and rarely a few additional reduced ones.
Type locality: Mountain valley between San Pedrq and Santa Cruz, Sonera. Distkibution: Western Texas to Arizona, Sonora, Durango, and Chihuahua.