Eupatorium altissimum Linnaeus (Q2597)

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Eupatorium altissimum is a taxon with the rank species within the genus Eupatorium
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English
Eupatorium altissimum Linnaeus
Eupatorium altissimum is a taxon with the rank species within the genus Eupatorium

    Statements

    taxon/id/Eupatorium altissimum Linnaeus
    0 references
    Eupatorium altissimum Linnaeus
    Eupatorium altissimum
    Linnaeus
    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
    Eupatorium altissimum
    eupatoire élevée (French)
    tall boneset (English)
    upland boneset (English)
    tall thoroughwort (English)
    Tall thoroughwort (English)
    1 reference
    Klinkenberg, B. (ed.). 2010+. E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab. for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver, B.C. http://www.eflora.bc.ca http://www.eflora.bc.ca/
    1 reference
    Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
    1 reference
    Herbier Marie-Victorin (MT). Université de Montréal, Montréal, QC. Specimen. http://www.biodiversite.umontreal.ca/herbier-marie-victorin?lang=en
    Flowering Jul–Sep.
    clearings
    open woods
    thickets
    Stems (from short caudices or stout rhizomes) single, sparsely branched distally, pubescent throughout (nodes sometimes with galls).
    sessile or subsessile;
    blades strongly 3-nerved from bases, lance-elliptic to oblanceolate, 50–120 × 5–20 mm, bases ± cuneate, margins entire proximally, serrate distally, apices acuminate, faces puberulent or villous, glanddotted.
    Heads in corymbiform arrays.
    Phyllaries 8–10 in 2–3 series, oblong, 1–4 × 0.5–1.5 mm, (bases tapered) apices rounded to acute (not mucronate), abaxial faces pubescent throughout.
    corollas 3–3.5 mm.
    Cypselae 2–3 mm;
    pappi of 30–40 bristles 3.5–4 mm. 2n = 20, 30, 40.