Pectis rusbyi Greene ex A. Gray

Pectis rusbyi Greene; A. Gray, Syn. Fl. V: 361. 1884 A low annual; stem rather simple, about 1 dm. high, angled, glabrous; leaves flat, linear or linear-oblanceolate, mostly obtuse, 2-3.5 cm. long, 1-3 mm. wide, with 2-3 pairs of basal bristles; peduncles 3-6 cm. long; involucre 4-5 mm. high and as wide, turbinate; bracts about 8, flat, slightly keeled at the base, obtuse, with a conspicuous apical gland; ray-flowers about 8; ligules yellow, 6 mm. long, 2 mm. wide; disk-flowers 20-30; corollas 4 mm. long; achenes 4 mm„ long, sparingly hirsutulous or glabrate; pappus of the disk-flowers of many minute awntipped squameUae; that of the ray-flowers of 2 or 3 slender awns, 2.5-3 mm. long.
Type locality: Beaver Creek, Arizona. Distribution: Known only from the type locality.