Arnica nevadensis

Plants 10-50 cm. Stems simple. Leaves 2-3 pairs, mostly cauline (basal leaves often persistent on sterile rosettes); petiolate (petioles narrowly to broadly winged); blades elliptic to ovate, 3-8 × 2-4 cm, margins entire or denticulate, apices acute to rounded, faces stipitate-glandular. Heads 1(-3). Involucres campanulate-turbinate. Phyllaries 10-16, oblanceolate. Ray florets 6-14; corollas yellow. Disc florets: corollas yellow; anthers yellow. Cypselae dark gray, 6-9 mm, stipitate-glandular; pappi white or tawny, bristles barbellate to subplumose. 2n = 76.

Flowering Jul-Aug. Coniferous forests, meadows, rocky slopes; 1500-3000 m; Calif., Nev., Oreg., Wash.