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
Language Label Description Also known as
English
Arnica longifolia D. C. Eaton in S. Watson
Arnica longifolia is a taxon with the rank species within the genus Arnica

    Statements

    taxon/id/Arnica longifolia D.C. Eaton
    0 references
    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
    arnica longifoliée (French)
    spear-leaved arnica (English)
    seep-spring arnica (English)
    long-leaved arnica (English)
    spear-leaved leopardbane (English)
    Spearleaf arnica (English)
    1 reference
    Argus, G.W. & D.J. White. 1978. Rare Vascular Plants of Alberta. Syllogeus 17. 46 pp.
    1 reference
    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.
    Flowering Jun–Oct.
    montane
    forests
    to alpine
    to moist areas
    stream banks
    late snow-melt areas
    1300–3700 m
    Plants 30–60 (–110) cm.
    Stems (often relatively numerous, clustered in clonal patches) simple.
    Leaves 5–7 pairs, mostly cauline (basal leaves usually withered by flowering);
    sessile or subsessile (proximalmost with connate-sheathing bases);
    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).
    Heads 3–20 (–35).
    Involucres turbinate-campanulate.
    Phyllaries 11–15 (–20), narrow to broadly lanceolate.
    Ray-florets 6–15;
    Disc-florets 6–11;
    Cypselae brown to black, 3–7 mm, glabrous or sparsely hirsutulous, stipitate-glandular;
    pappi stramineous to tawny, bristles barbellate to subplumose.