Arnica nevadensis

A. Gray

Proc. Amer. Acad. Arts 19: 55. 1883

Common names: Nevada arnica Sierra arnica
Synonyms: Arnica tomentella Greene
Treatment appears in FNA Volume 21. Treatment on page 374. Mentioned on page 368.
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.

Phenology: Flowering Jul–Aug.
Habitat: Coniferous forests, meadows, rocky slopes
Elevation: 1500–3000 m

Distribution

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Calif., Nev., Oreg., Wash.

Discussion

References

None.

Lower Taxa

No lower taxa listed.