Difference between revisions of "Arnica ovata"
Pittonia 4: 161. 1900.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Revision as of 21:41, 16 December 2019
Plants 10–50 cm. Stems (forming clumps) simple or branched among heads. Leaves 2–3(–4) pairs (basal 1–2 pairs usually withered by flowering, petiolate, petioles broadly winged, blades round-ovate, relatively small; sterile rosettes lacking), mostly cauline; petiolate (at least middle pair, petioles broadly to narrowly winged); blades broadly deltate to ovate, 4–8 × 2–6 cm (middle pair largest), margins irregularly denticulate to coarsely dentate-serrate, apices acute, faces puberulent (hairs minute) and stipitate-glandular. Heads 1–3(–5). Involucres usually narrowly turbinate, rarely narrowly campanulate. Phyllaries 9–20, linear to narrowly lanceolate. Ray florets 8–16, yellow. Disc florets: corollas yellow; anthers yellow. Cypselae brown to black, 5–7 mm, sparsely to moderately pilose and stipitate-glandular; pappi stramineous to tawny, bristles subplumose. 2n = 57, 76.
Phenology: Flowering Jul–Sep.
Habitat: Moist meadows and conifer forests, stream banks, late snow-melt areas, montane to subalpine
Elevation: 200–3600 m
Distribution
Alta., B.C., Yukon, Alaska, Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.
Discussion
Selected References
None.