Perennials, 3-20(-30) cm; taprooted, caudices usually branched, retaining old leaf bases. Stems usually ascending to erect, moderately hirsute to hispidulous (hairs spreading-deflexed), minutely glandular at least distally. Leaves basal (persistent) and cauline (petioles prominently ciliate, hairs spreading, thick-based); basal blades 1-3-nerved, narrowly oblanceolate (often folding), 20-50(-80) × 1-5 mm, margins entire, faces strigose or hispidulous to hirsutulous, minutely glandular; cauline blades linear to linear-lanceolate, reduced distally to near heads. Heads 1(-2). Involucres 4-7 × 6-11 mm. Phyllaries in 2-3(-4) series (greenish), moderately hirsute, densely minutely glandular. Ray florets 20-40(-55); corollas blue, less commonly white to pink, 6-11 mm, laminae reflexing. Disc corollas 2.9-4.5 mm (throats tubular). Cypselae 1.8-2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of inconspicuous, fine setae, inner of (13-)20-27 bristles.

Erigeron clockeyi is found in the Great Basin and Sierra Nevada.