Erigeron pulcherrimus A. A. Heller

Perennials, (5–)7–30(–35) cm; taprooted, caudex branches relatively short and thick. Stems erect (gray-green), moderately to densely gray-green-strigose (hairs white, stiff), eglandular. Leaves basal (persistent) and cauline (gray-green; petiole bases broadened or not, not thickened and whitish-indurate); basal blades linear to narrowly oblanceolate, 10–70 × 1–3(–5) mm, cauline little reduced for about ¹ / 2 – ³ / 4 stems, margins entire, faces moderately to densely strigose (hairs white, stiff), eglandular. Heads 1. Involucres 5–7(–9) × 10–16(–20) mm. Phyllaries in 2–3(–4) series, hirsute to villoso-hirsute, minutely glandular. Ray florets 25–60; corollas white to pink or bluish, 8–15 mm, laminae coiling. Disc corollas 3.8–5.7 mm. Cypselae 2.5–3 mm, (2–)4(–5)-nerved, faces densely strigoso-sericeous; pappi: outer sometimes of setae or bristles (to 0.5 lengths of inner), inner of 32–50 bristles.

Erigeron bistiensis G. L. Nesom & Hevron; E. pulcherrimus var. wyomingia (Rydberg) Cronquist