Symphyotrichum hallii (A. Gray) G. L. Nesom (Q2487)

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Symphyotrichum hallii is a taxon with the rank species within the section Symphyotrichum sect. Occidentales
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English
Symphyotrichum hallii (A. Gray) G. L. Nesom
Symphyotrichum hallii is a taxon with the rank species within the section Symphyotrichum sect. Occidentales

    Statements

    taxon/id/Symphyotrichum hallii (A. Gray) G.L. Nesom
    0 references
    Symphyotrichum hallii (A. Gray) G.L. Nesom
    Symphyotrichum hallii
    (A. Gray) G.L. Nesom
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
    accepted
    Symphyotrichum hallii
    aster de Hall (French)
    Hall's aster (English)
    Hall’s aster (English)
    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 Jul–Aug.
    summer-dry grasslands
    meadows
    Stems 1–6, ascending to erect, glabrous or puberulent, especially distally.
    Leaves thin, margins entire, apices acute, faces glabrous or scabridulous;
    basal withering by flowering, petiolate, blades narrowly oblanceolate to linear, 10–60 × 2–10 mm, attenuate, margins entire;
    proximalmost cauline sometimes withering by flowering, sessile, blades linear to narrowly oblanceolate, 30–80 × 2–8 mm, bases cuneate, apices acute;
    distal sessile, blades linear, 10–50 × 2–8 mm, bases ± cuneate, truncate.
    Heads in racemiforn to paniculiform arrays, branches usually less than 10 (–20) cm.
    Peduncles sparsely to densely hairy, bracts 3–10, linear to narrowly elliptic, much smaller than distal leaves.
    Involucres campanulate, 4–7 mm.
    Phyllaries in 5–6 series, appressed, narrowly oblanceolate (outer) to linear (inner), unequal, bases (outer) herbaceous or scarious less than 1/2, margins entire, green zones ovate to linear (inner), apices obtuse, faces glabrous.
    Ray-florets 14–35;
    corollas usually white, sometimes pale violet, laminae 7–12 × 1–2 mm.
    Disc-florets 20–35;
    corollas yellow, 4.5–6.5 mm, lobes triangular, 0.7–1 mm, glabrous.
    Cypselae brown, cylindric to obovoid, not compressed, 2–2.5 mm, 2–5-nerved, faces hairy;
    pappi white, 5–7 mm. 2n = 16, 32, 48.