Symphyotrichum subg. Virgulus (Rafinesque) G. L. Nesom (Q2501)
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Symphyotrichum subg. Virgulus is a taxon with the rank subgenus within the genus Symphyotrichum
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Symphyotrichum subg. Virgulus (Rafinesque) G. L. Nesom
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Symphyotrichum subg. Virgulus is a taxon with the rank subgenus within the genus Symphyotrichum
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Statements
taxon/id/Symphyotrichum subg. Virgulus (Rafinesque) G.L. Nesom
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Symphyotrichum subg. Virgulus (Rafinesque) G.L. Nesom
Symphyotrichum subg. Virgulus
(Rafinesque) 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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rhizomatous or with cormoid caudices.
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Stems brittle at maturity, usually ± densely hairy, sometimes glabrous, sometimes stipitate-glandular at least distally.
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Leaves: basal withering by flowering, usually sessile, sometimes subpetiolate, blades usually 3-nerved, spatulate or obovate to oblanceolate, sometimes linear-oblanceolate, margins entire;
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cauline sessile, blades ovate or oblong to lanceolate, oblanceolate, or linear, bases rounded or auriculate, clasping or subclasping (leaves sometimes reduced distally).
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Phyllaries unequal or subequal, sometimes ± foliaceous, bases usually indurate, green zones usually diamond-shaped, sometimes lanceolate or apices foliaceous (faces usually hairy, sometimes glabrous, sometimes stipitate-glandular).
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Ray-florets 7–36 (–100) in 1 series;
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laminae (2–) 4.5–24 (–25) × 0.5–2 mm.
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Disc corollas usually weakly ampliate, throats narrowly funnelform, lobes erect.
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usually more or less densely
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stipitate-glandular
sometimes; at-least distally; distally
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linear-oblanceolate
sometimes
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lanceolate oblanceolate or linear
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lanceolate oblanceolate or linear
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lanceolate oblanceolate or linear
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compressed
sometimes more or less
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