Difference between revisions of "Arnica latifolia"
Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 147. 1832.
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|special status=Illustrated;Endemic | |special status=Illustrated;Endemic | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Latest revision as of 20:15, 5 November 2020
Plants 10–50 cm. Stems usually simple, sometimes branched distally. Leaves 2–4(–6) pairs, cauline (basal leaves often persistent on sterile rosettes), petiolate (proximal, petioles relatively short, broadly winged) or sessile (mid and distal); blades lance-elliptic to ovate, 2–10 × 1–6 cm, margins serrate to dentate, apices obtuse to acute, faces glabrous or sparsely villous. Heads 1 or 3–5(–9). Involucres narrowly turbinate. Phyllaries 8–20, lanceolate to oblanceolate. Ray florets 8–15; corollas yellow. Disc florets 20–90; corollas yellow; anthers yellow. Cypselae dark brown, 5–9 mm, sparsely villous; pappi white, bristles barbellate. 2n = 38, 76.
Phenology: Flowering Jul–Aug.
Habitat: Relatively moist, montane conifer forests to subalpine meadows
Elevation: 500–3300 m
Distribution
Alta., B.C., N.W.T., Yukon, Alaska, Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.
Discussion
Selected References
None.