Symphyotrichum urophyllum (Lindley ex de Candolle) G. L. Nesom (Q2429)
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Symphyotrichum urophyllum is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Symphyotrichum urophyllum (Lindley ex de Candolle) G. L. Nesom
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Symphyotrichum urophyllum is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Statements
taxon/id/Symphyotrichum urophyllum (Lindley ex de Candolle) G.L. Nesom
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Symphyotrichum urophyllum (Lindley ex de Candolle) G.L. Nesom
Symphyotrichum urophyllum
(Lindley ex de Candolle) 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-ON
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Newmaster, S.G., A. Lehela, M.J. Oldham, P.W.C. Uhlig & S. McMurray. 1998. Ontario Plant List. Ontario Forest Research Institute, Sault Ste. Marie, Ontario. Forest Information Paper No. 123. 550 pp.
CA-ON
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US-AL
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US-AR
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US-FL
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US-GA
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US-IL
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US-IN
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US-IA
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US-KS
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US-KY
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US-ME
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US-MD
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US-MA
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US-MI
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US-MN
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US-MS
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US-MO
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US-NE
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US-NJ
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US-NY
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US-NC
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US-ND
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US-OH
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US-OK
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US-PA
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US-SC
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US-TN
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US-VT
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US-VA
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US-WV
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US-WI
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40–300+ m
40 meter
300 meter
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short-rhizomatous or with stout, branched caudices.
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Stems 1–5+, erect (straight to slightly flexuous, brittle, sometimes stout), proximally glabrous or glabrate, distally sparsely pilose.
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Leaves thin, margins usually shallowly, sometimes deeply serrate, rarely entire (distal), (piloso to strigoso-) ciliate to scabrous (distal), apices mucronate, abaxial faces moderately pilose, ± densely so on midveins, adaxial glabrate to sparsely pilose or scabrous;
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basal usually withering by flowering, sometimes persistent, long-petiolate (5–15 cm, petioles not or narrowly winged, sheathing), blades ovate to lanceovate or lanceolate, 25–120 × 15–50 mm, bases usually shallowly, sometimes deeply, cordate to truncate or rounded, apices acute, sometimes rounded;
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proximal cauline sometimes deciduous at flowering, winged-petiolate (petioles distally usually broader-winged, clasping), blades ovate to lanceolate, 50–120 × 20–50 mm, gradually reduced distally, bases usually truncate or rounded to attenuate, sometimes cordate, apices usually acute or acuminate, sometimes nearly caudate;
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distal ± shortly winged-petiolate or sessile, blades lanceovate or lanceolate to linear-lanceolate, 10–100 × 1–25 mm, reduced distally, bases attenuate to cuneate, margins entire to subentire, scabrous, apices acuminate to subcaudate.
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Heads (crowded) in dense, elongate, paniculiform arrays, branches stiffly ascending to erect (sometimes arched when long, peduncles then often secund), usually racemiform, sometimes paniculiform, leafy.
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Peduncles 0.3–2 cm, sparsely pilosulous to glabrate, bracts many, ascending, linear to subulate, 2–4 mm, grading into phyllaries.
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Involucres cylindric, (4–) 4.5–6 (–7) mm.
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Phyllaries in 4–6 series, appressed or recurved-spreading, subulate (outer) to linear-lanceolate (inner), unequal, bases indurate 1/3–1/2+, margins scarious, hyaline, erose, sparsely ciliolate (mostly distally), green zones linear-lanceolate (outer) to linear (inner), apices long-acuminate to caudate, recurved, hyaline-mucronate to aristate, tips often purple, faces glabrous.
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Ray-florets 8–15 (–20);
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corollas mostly white to pale-pink or lilac or light blue, laminae 4.5–8 (–10) × 0.8–1.5 mm.
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Disc-florets (8–) 10–15 (–20);
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corollas whitish to cream becoming pink, (3.5–) 4–5 mm, tubes shorter than funnelform throats (with hairs), lobes lanceolate, 0.4–0.7 mm.
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Cypselae tan to brown or dull purple (nerves stramineous), obovoid, ± compressed, 1.8–2.5 mm, 4–6-nerved, faces glabrous or glabrate or very sparsely strigillose;
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pappi white or rose-tinged, 3–4 mm. 2n = 16.
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glabrate
sparsely pilose or scabrous
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lanceovate or lanceolate
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winged-petiolate
more or less shortly
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lanceolate
linear-lanceolate
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mostly white
pale-pink or lilac or light blue
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