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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Symphyotrichum hallii (A. Gray) G. L. Nesom
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Symphyotrichum hallii is a taxon with the rank species within the section Symphyotrichum sect. Occidentales
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Statements
taxon/id/Symphyotrichum hallii (A. Gray) G.L. Nesom
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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
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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.
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US-WA
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Stems 1–6, ascending to erect, glabrous or puberulent, especially distally.
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Leaves thin, margins entire, apices acute, faces glabrous or scabridulous;
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basal withering by flowering, petiolate, blades narrowly oblanceolate to linear, 10–60 × 2–10 mm, attenuate, margins entire;
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proximalmost cauline sometimes withering by flowering, sessile, blades linear to narrowly oblanceolate, 30–80 × 2–8 mm, bases cuneate, apices acute;
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distal sessile, blades linear, 10–50 × 2–8 mm, bases ± cuneate, truncate.
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Heads in racemiforn to paniculiform arrays, branches usually less than 10 (–20) cm.
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Peduncles sparsely to densely hairy, bracts 3–10, linear to narrowly elliptic, much smaller than distal leaves.
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Involucres campanulate, 4–7 mm.
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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.
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Ray-florets 14–35;
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corollas usually white, sometimes pale violet, laminae 7–12 × 1–2 mm.
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Disc-florets 20–35;
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corollas yellow, 4.5–6.5 mm, lobes triangular, 0.7–1 mm, glabrous.
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Cypselae brown, cylindric to obovoid, not compressed, 2–2.5 mm, 2–5-nerved, faces hairy;
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pappi white, 5–7 mm. 2n = 16, 32, 48.
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narrowly oblanceolate
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narrowly oblanceolate
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