Symphyotrichum subg. Astropolium (Nuttall) Semple in J. C. Semple et al. (Q2518)
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Symphyotrichum subg. Astropolium is a taxon with the rank subgenus within the genus Symphyotrichum
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Symphyotrichum subg. Astropolium (Nuttall) Semple in J. C. Semple et al.
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Symphyotrichum subg. Astropolium is a taxon with the rank subgenus within the genus Symphyotrichum
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Statements
taxon/id/Symphyotrichum subg. Astropolium (Nuttall) J.C. Semple
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Symphyotrichum subg. Astropolium (Nuttall) J.C. Semple
Symphyotrichum subg. Astropolium
(Nuttall) J.C. Semple
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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Stems not brittle at maturity, glabrous or glabrate, sometimes sparsely hairy in leaf-axils.
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Leaves: basal withering by flowering, petiolate, blades 1-nerved, spatulate to ovate or obovate, margins entire or shallowly serrate or crenate;
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cauline subpetiolate or sessile, blades narrowly lanceolate, linear, or subulate, bases attenuate, slightly sheathing, or ± clasping.
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Ray-florets 10–30 (–54) in 1 series;
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laminae (1.3–) 5–8.5 (–9.5) × (0.2–) 1.2–2 mm.
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Disc corollas sometimes weakly ampliate, throats funnelform, lobes ± erect or ± spreading.
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shallowly serrate or crenate
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compressed
sometimes more or less
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