Rock fleabane

Perennials, 3–5 cm; taprooted, caudex branches relatively thick, short, retaining old leaf bases. Stems erect to ascending, glabrous, eglandular. Leaves basal (persistent) and cauline (petioles, when distinct, about equaling blades); basal blades linear-oblanceolate to slightly spatulate, 10–30 × 0.5–2(–3) mm, cauline similar or slightly reduced distally, margins entire, faces sparsely strigose or glabrous, eglandular. Heads 1. Involucres 2.5–3.5 × 6–7 mm. Phyllaries in 3–4 series (purplish, midveins greenish yellow, not swollen), sparsely strigose or glabrous, eglandular. Ray florets 20–29; corollas white, drying white to slightly lavender, 5.5–7 mm, laminae reflexing. Disc corollas 2.1–3 mm (veins not orange-resinous). Cypselae 1.3–1.6 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 9–13(–15) bristles.

Flowering Apr–Jul(–Oct). Crevices and ledges in canyons above Mogollon Rim; 1300–2600 m; Ariz.