Symphyotrichum hendersonii (Fernald) G. L. Nesom (Q2497)
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Symphyotrichum hendersonii is a taxon with the rank species within the section Symphyotrichum sect. Occidentales
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Symphyotrichum hendersonii (Fernald) G. L. Nesom
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Symphyotrichum hendersonii is a taxon with the rank species within the section Symphyotrichum sect. Occidentales
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Statements
taxon/id/Symphyotrichum hendersonii (Fernald) G.L. Nesom
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Symphyotrichum hendersonii (Fernald) G.L. Nesom
Symphyotrichum hendersonii
(Fernald) 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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University of British Columbia Herbarium (UBC), Vancouver, BC. Specimen. http://www.beatymuseum.ubc.ca/herbarium/index.html
US-CA
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US-ID
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US-MT
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US-OR
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US-WA
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1000–1500+ m
1,000 meter
1,500 meter
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Stems 1–5+, 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 persistent or withering by flowering, petiolate, blades oblanceolate, 50–150 × 10–20 mm, bases attenuate or cuneate;
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proximal cauline sessile, blades elliptic to oblanceolate, 80–200 × 10–25 mm, bases cuneate, auriculate;
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distal sessile, 40–80 × 7–20 mm, reduced distally.
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Heads in paniculiform arrays, branches numerous, 10–45 cm.
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Peduncles sparsely to densely hairy, bracts 3–10, acute, lanceolate to linear, bases auriculate.
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Involucres campanulate, 5–10 mm.
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Phyllaries in 4–5 series, narrowly oblong or linear (outer) to linear (inner), unequal, bases scarious, margins entire, sometimes proximally ciliate, green zones linear, apices acute, faces glabrous.
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Ray-florets 25–45;
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corollas violet, laminae 9–15 × 1–2.5 mm.
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Disc-florets (50–) 70–80;
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corollas yellow, 5–6 mm, lobes triangular, 0.5–0.8 mm.
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Cypselae brown, cylindric to obovoid, not compressed, 3–3.5 mm, 3–4-nerved, faces hairy;
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pappi white, 4.5–5 mm. 2n = 16, 32.
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