Guadalupe lazy daisy

Perennials, 1–2(–5) cm, eglandular; taprooted, forming mats from systems of rhizomelike caudex branches. Leaves even-sized, densely overlapping; blades linear to oblanceolate, 3–8 × 0.5–1 mm, coriaceous, bases not clasping (margins ciliate, midnerves strongly raised, longitudinally 2-grooved adaxially), apices spinulose, faces glabrous. Involucres cylindro-turbinate, 4.5–5 × 2.5–4 mm. Ray florets 6–10; corollas white. Disc florets 5–6, bisexual. Cypselae ca. 1.5 mm, 2–3- (ray) or 5- (disc) nerved, strigose; pappi in 2 series, outer of minute scales less than 0.1 mm plus inner of (4–)5(–6) bristles 2–4.2 mm. 2n = 16.

Flowering May–Aug. Walls, ledges, and banks, limestone canyons; 1500–2400 m; N.Mex., Tex.