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Arnica ovata
Greene
Family:
Asteraceae
Sticky-Leaf Leopardbane
[
Arnica latifolia var. viscidula
A. Gray]
FNA
Resources
Steven J. Wolf in Flora of North America (vol. 21)
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.
2
n
= 57, 76.
Flowering Jul-Sep. Moist meadows and conifer forests, stream banks, late snow-melt areas, montane to subalpine; 200-3600 m; Alta., B.C., Yukon; Alaska, Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.
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