Vasey's Rockdaisy

Perityle vaseyi Coult. Contr. U. S. Nat. Herb. 1: 42. 1890
Perennial with a woody base; stem 2-3 dm. high, glandular-pubescent; leaves mostly alternate; petioles 1-2 cm. long; blades triangular in outline, 2-4 cm. long, pinnately or palmately divided into long divisions which are again cleft and lobed, the ultimate lobes being cuneate; peduncles 3-7 cm. long; involucre 8-10 mm. high, 10-12 mm. broad; bracts linearoblong, acute or acuminate, ciliate, especially at the tips; ligules deep-yellow, 4-6 mm. long, oblong, 3-toothed; disk-corollas funnelform, 5.5 mm. long; style-appendages filiform-subulate, hirsute; achenes oblong, pubescent on the faces, hispid-ciliate on the margins, 3.5 mm. long; pappus of a crown of bristle-like squamellae and a single barbellate awn as long as the achene.
Type locality: Chisos Mountains, Texas. Distribution: Known only from the type locality.