Symphyotrichum frondosum (Nuttall) G. L. Nesom (Q2483)
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Symphyotrichum frondosum is a taxon with the rank species within the section Symphyotrichum sect. Conyzopsis
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Symphyotrichum frondosum (Nuttall) G. L. Nesom
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Symphyotrichum frondosum is a taxon with the rank species within the section Symphyotrichum sect. Conyzopsis
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Statements
taxon/id/Symphyotrichum frondosum (Nuttall) G.L. Nesom
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Symphyotrichum frondosum (Nuttall) G.L. Nesom
Symphyotrichum frondosum
(Nuttall) 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.
CA-BC
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US-AZ
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US-CA
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US-CO
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US-ID
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US-NV
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US-NM
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US-OR
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US-UT
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US-WA
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US-WY
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10–2200 m
10 meter
2,200 meter
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Stems 1–6+, decumbent to erect (straight), glabrous.
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Leaves thin, margins entire (basal sometimes serrulate), sometimes ciliate or remotely scabrous, acute to ± obtuse, faces glabrous;
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basal withering by flowering, petiolate, blades oblanceolate to spatulate, 20–115 × 2–15 mm [cult.], bases attenuate;
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proximal cauline withering by flowering;
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cauline subpetiolate or sessile (distal), blades oblanceolate to linear, 10–80 × 1.5–10 mm, reduced distally, bases cuneate.
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Heads (radiate) in narrow, paniculiform to spiciform arrays, branches often in axils of nearly every leaf, ascending.
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Peduncles glabrous, bracts linear.
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Involucres narrowly campanulate, 5–9 mm.
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Phyllaries in 3–4 series, ± spreading, oblong-oblanceolate or lanceolate to obovate, subequal to ± unequal, linear-lanceolate or linear (innermost), bases scarious, margins narrowly scarious, hyaline, erose, ciliolate, green zones (outer) foliaceous, (inner) lanceolate, apices obtuse to rounded, inner acute, mucronulate, faces glabrous.
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Ray-florets 90–110 in 4–5+ series;
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corollas pink to pinkish white, laminae 1.5–2 × 0.1–0.2 mm (surpassing style-branches, barely surpassing disc corollas; tubes ± 3 mm).
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Disc-florets ± 37;
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corollas yellow, 4.4–5.2 mm, barely ampliate, tubes much longer than cylindric limbs, lobes lanceolate, ± 0.3 mm.
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Cypselae tan, obovoid, ± compressed, 2 mm, 2–3-nerved, faces strigillose;
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pappi white to yellowish, 6.3–7.5 mm. 2n = 14.
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