Erigeron piperianus

Perennials, (3-)6-12 cm; taprooted, caudices usually branched. Stems erect (distinctly white in proximal portions), usually strigose at least on distal ¹ / 2 , sometimes strigoso-hirsute or mixed-hispid, minutely glandular. Leaves mostly cauline (proximal internodes elongate; petioles prominently ciliate, hairs spreading, thick-based); blades linear to linear-oblanceolate, 20-40 × 1-1.5 mm (on proximal ¹ / 2 - ² / 3 of stems), (bases relatively thin, not sheathing) margins entire, hispido-ciliate, faces strigose. Heads 1. Involucres 3.5-4 × 5-10 mm. Phyllaries in 2-3 series, hirsuto-villous, sometimes minutely glandular. Ray florets 25-40; corollas yellow, drying dark yellow (sometimes fading on drying and appearing whitish or creamy), 4-9 mm, laminae coiling. Disc corollas 2.5-3 mm. Cypselae 1.6-1.8 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 15-25 bristles.

Flowering May-Jun. Dry, open places, level to moderate slope, commonly with sagebrush, usually undisturbed, sometimes grazed and/or burned, sites; (100-)200-400(-700) m; Wash.