Symphyotrichum oolentangiense (Riddell) G. L. Nesom (Q2422)
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Symphyotrichum oolentangiense is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Symphyotrichum oolentangiense (Riddell) G. L. Nesom
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Symphyotrichum oolentangiense is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
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Statements
taxon/id/Symphyotrichum oolentangiense (Riddell) G.L. Nesom
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Symphyotrichum oolentangiense (Riddell) G.L. Nesom
Symphyotrichum oolentangiense
(Riddell) 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-LA
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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-NY
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US-OH
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US-OK
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US-PA
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US-SD
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US-TN
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US-TX
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US-WI
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50–500 m
50 meter
500 meter
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short-rhizomatous or with branched, woody caudices.
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Stems 1–5+, erect (straight), glabrate to hispidulous, distally pilosulous to strigillose in arrays.
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Leaves thick, firm, margins entire or crenate-serrate, scabrous, apices mucronate, faces scabrous, abaxial strigose to piloso-strigose or hirsute, adaxial strongly strigose;
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basal withering by flowering, long-petiolate (petioles slightly winged, bases dilated, sheathing, ciliate), blades ovate to lanceovate, 40–150 (–180) × 10–40 (–60) mm, bases ± cordate or rounded to attenuate, margins crenate-serrate to subentire, apices rounded or obtuse to acute;
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proximal cauline petiolate (petioles narrowly winged, clasping), blades ovate or ovatelanceolate to lanceolate, 30–130 × 12–70 mm, gradually or ± abruptly reduced distally, bases rounded to attenuate, margins entire, scabrous, apices acute or attenuate, callus-pointed;
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distal sessile or sometimes short-petiolate and ± winged (appressed or ascending), blades lanceolate or linear-lanceolate to subulate, 5–80 × 1–10 mm, strongly reduced distally (more sharply so on branches), bases attenuate to cuneate or ± rounded, margins entire.
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Heads in open, paniculiform arrays, branches ascending, stiff, sometimes long-arching and peduncles secund, ± ridged, densely leafy with small, ± appressed branch leaves, ± strigose.
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Peduncles ascending, 0.2–6 cm, glabrate, densely bracteate, bracts linear-subulate, scabrous or ciliate-margined, often revolute, grading with phyllaries.
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Involucres campanulate to cylindro-campanulate, 4.5–8 mm.
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Phyllaries in (3–) 4–6 series, appressed or outer slightly spreading, lanceolate to oblong-lanceolate, strongly unequal, bases indurate 1/2–3/4, margins scarious, erose, hyaline, ciliolate, apical green zones diamond-shaped, apices acute to acuminate or caudate (then tips often involute), mucronulate to apiculate, faces glabrous.
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Ray-florets (10–) 13–20 (–25);
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corollas usually pale to azure blue to violet-purple, (rarely rosy, white or bluish white), laminae (5–) 8–12 (–14) × 1.4–1.7 mm.
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Disc-florets (15–) 20–25 (–30);
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corollas light yellow turning deep purple, 4–5 mm, tubes much shorter than narrowly funnelform throats, lobes triangular to lanceolate, 0.4–0.7 mm (lobes sparsely hairy).
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Cypselae dull purple or stamineous with purple streaks, oblong-obovoid, ± compressed, 1.8–2 mm, 4–5-nerved, faces glabrate to sparsely strigose;
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pappi cream or slightly rose-tinged, 3–4 mm. 2n = 32.
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glabrate
hispidulous distally pilosulous
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glabrate
hispidulous distally pilosulous
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strigose
piloso-strigose or hirsute
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less cordate or rounded
attenuate
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less cordate or rounded
attenuate
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less cordate or rounded
attenuate
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reduced
more or less abruptly; more or less abruptly; distally
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attenuate
cuneate or more or less rounded
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campanulate
cylindro-campanulate
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acuminate or caudate mucronulate
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acuminate or caudate mucronulate
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