Pectis palmed

Pectis palmed S. Wats. Proc. Am. Acad. 24: 58. 1889
A diffuse annual; stem 1-2 dm. high, dichotomously branched, glabrous; leaves linear, about 4 cm. long, 2-4 mm. wide, glabrous, with 1-2 pairs of basal bristles; glands rather conspicuous, in a single row along each margin; heads solitary in the forks; peduncles 3-8 cm. long; involucre 5-6 mm. high, and as broad, turbinate; bracts 8-10, keeled below the middle; rayflowers 8-10; ligules yellow, narrow, about 5 mm. long, 1.5-2 mm. broad; disk-flowers 25-40; corollas about 5 mm. long; achenes 4 mm. long, strigose; pappus-bristles of the disk-flowers 15-20, scabrous, 3 mm. long; those of the ray -flowers 2 or 3, somewhat dilated at the base.
Type locality: Guaymas, Sonera. DisTRtBUTiON : Sonera and Lower Califernia.