Symphyotrichum lanceolatum (Willdenow) G. L. Nesom (Q2457)
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Symphyotrichum lanceolatum is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Symphyotrichum lanceolatum (Willdenow) G. L. Nesom
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Symphyotrichum lanceolatum is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Statements
taxon/id/Symphyotrichum lanceolatum (Willdenow) G.L. Nesom
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Symphyotrichum lanceolatum (Willdenow) G.L. Nesom
Symphyotrichum lanceolatum
(Willdenow) 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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Lance-leaved or panicled or white panicled aster (English)
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CA-AB
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CA-BC
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CA-MB
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CA-NB
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CA-NS
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CA-NT
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CA-NL
Nfld. and Labr. (Nfld.)
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CA-ON
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CA-PE
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CA-QC
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CA-SK
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US-AL
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US-AZ
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US-AR
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US-CA
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US-CO
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US-CT
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US-DC
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US-FL
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US-GA
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US-ID
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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-LA
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US-ME
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US-MA
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US-MD
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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-MT
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US-NC
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US-ND
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US-NH
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US-NJ
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US-NM
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US-NY
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US-NE
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US-NV
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US-OH
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US-OK
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US-OR
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US-PA
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US-RI
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US-SC
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US-SD
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US-TN
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US-TX
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US-UT
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US-VA
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US-VT
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US-WV
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US-WA
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US-WI
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US-WY
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Stems 1, erect (straight, stout), glabrous or hairy.
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Leaves thin, scabrous, apices mucronate, abaxial faces glabrous (vein areoles indistinct, elongate), adaxial glabrous or sparsely scabrous (var. hesperium);
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basal withering by flowering, petiolate to subpetiolate (petioles winged, ciliate, bases dilated, sheathing), blades elliptic-oblanceolate or obovate to suborbiculate, 10–80 × 5–20 mm, cuneate to attenuate, margins crenate-serrate, apices acute to obtuse or rounded;
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proximal cauline withering by flowering, sessile or subsessile, blades lanceovate or oblanceolate to linear-lanceolate, (40–) 50–150 × (3–) 10–20 (–35) mm, progressively reduced distally, bases cuneate, ± decurrent, margins serrate, apices acute to acuminate;
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distal sessile, blades oblanceolate to linear, 30–100 (–140) mm, only slightly reduced distally, bases cuneate, margins entire.
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Heads in ample or diffuse to narrow, elongate, leafy, paniculiform arrays, branches ± ascending, rarely secund, branch leaves often longer than pedicels.
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Peduncles 0.5–5 cm, ± pilose, bracts 1–3 (–5), linear-oblanceolate to lanceolate, foliaceous, ciliate.
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Involucres campanulate to cylindric, 3–8 mm.
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Phyllaries in (3–) 4–6 series, appressed or slightly spreading, linear-lanceolate to linear (innermost), sometimes slightly dilated distally, ± strongly unequal to subequal (var. hesperium), bases indurate 1/4–1/2, margins scarious, erose, hyaline, sparsely ciliolate, green zones lanceolate to linear-lanceolate, outer sometimes foliaceous (particularly var. hesperium), apices acute to acuminate (outer) or acuminate to caudate (inner), mostly mucronulate, abaxial faces glabrous, adaxial sparsely strigillose.
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Ray-florets 16–50;
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corollas white to pinkish or pale blue-violet, laminae 3–10 (–14) × 0.5–1.3 mm.
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Disc-florets (13–) 20–40 (–52);
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corollas yellow becoming purple, 2.8–5.8 mm, tubes shorter than funnelform throats, lobes sometimes ± spreading, triangular, 0.4–1.2 mm.
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Cypselae gray or tan, obovoid, ± compressed, 1.5–2 mm, 4–5-nerved, faces sparsely strigillose;
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pappi white to sordid or tawny, 5.5–6 mm.
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reduced
progressively; distally
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oblanceolate
linear-lanceolate
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reduced
only slightly; distally
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ascending
in ample or diffuse to narrow , elongate , leafy , paniculiform arrays; more or less
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