Arnica longifolia D. C. Eaton in S. Watson (Q2831)
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Arnica longifolia is a taxon with the rank species within the genus Arnica
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English |
Arnica longifolia D. C. Eaton in S. Watson
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Arnica longifolia is a taxon with the rank species within the genus Arnica
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Statements
taxon/id/Arnica longifolia D.C. Eaton
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Arnica longifolia D.C. Eaton
Arnica longifolia
D.C. Eaton
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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CA-AB
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Argus, G.W. & D.J. White. 1978. Rare Vascular Plants of Alberta. Syllogeus 17. 46 pp.
CA-BC
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Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
CA-AB
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CA-BC
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US-CA
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US-CO
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US-ID
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US-MT
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US-NV
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US-OR
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US-UT
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US-WA
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US-WY
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1300–3700 m
1,300 meter
3,700 meter
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Plants 30–60 (–110) cm.
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Stems (often relatively numerous, clustered in clonal patches) simple.
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Leaves 5–7 pairs, mostly cauline (basal leaves usually withered by flowering);
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sessile or subsessile (proximalmost with connate-sheathing bases);
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blades lanceolate to lance-elliptic, 5–12 (–15) × 1.5–3.5 cm, margins usually entire, rarely denticulate, apices acute to acuminate, faces scabrid-puberulent, sometimes glandular (distal leaves not much reduced).
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Heads 3–20 (–35).
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Involucres turbinate-campanulate.
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Phyllaries 11–15 (–20), narrow to broadly lanceolate.
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Ray-florets 6–15;
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Disc-florets 6–11;
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Cypselae brown to black, 3–7 mm, glabrous or sparsely hirsutulous, stipitate-glandular;
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pappi stramineous to tawny, bristles barbellate to subplumose.
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