Pectis canescens Kunth

Pectis canescens H. B. K. Nov. Gen. & Sp. 4: 263. 1820
Lorentea canescens Less. Linnaea S: 135, 1830.
Siammarium hyrsopifoliutn Willd.; Less. Linnaea 5: 135, as synonym. 1830.
Chthonia canescens Cass.; B. D. Jackson, Ind. Kew. 1: 532, as synonym. 1893.
A diffuse perennial, with a woody cespitose base; stem 1-2 dm. long, decumbent, canescent, pilose; leaves Unear, about 2 cm. long, more or less hirsutulous, thick, with prominent midrib and revolute margins, often somewhat toothed, spinulose-tipped and with 3-6 pairs of bristles towards the base; glands inconspicuous, scattered; heads on solitary peduncles from the upper axils; peduncles 5-12 cm. long; involucre campanulate, 5-7 mm. high and nearly as broad; bracts 5-7, oblong or elliptic, rounded at the apex, usually puberulent; rayflowers 5-7; ligules about 7 mm. long, 1.5 mm. wide; disk-flowers 15-20; corollas 6 mm. long; achenes 5 mm. long, hirsute; pappus of the disk-flowers of about 20 bristles, 5 mm. long; that of the ray-flowers similar but much shorter.
Tyte locality: Chilpancingo, Mexico. Distribution: San Luis Potosi and Tepic to Guerrero.