Difference between revisions of "Sonchus Linnaeus (Q3163)"
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Latest revision as of 12:46, 24 June 2022
Sonchus is a taxon with the rank genus within the tribe Cichorieae
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Sonchus Linnaeus
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Sonchus is a taxon with the rank genus within the tribe Cichorieae
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taxon/id/Sonchus Linnaeus
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Sonchus Linnaeus
Sonchus
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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Stems erect, branched distally or throughout, usually glabrous, sometimes stipitate-glandular (mostly distally).
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Leaves basal and cauline or mostly cauline;
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basal usually petiolate (petioles usually winged), cauline often sessile;
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blades mostly oblong, oblanceolate, or lanceolate, (bases often auriculate) margins usually 1 (–2) -pinnately lobed, ultimate margins usually dentate (teeth often ± prickly), sometimes entire.
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Heads borne in corymbiform to subumbelliform arrays.
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Peduncles not notably dilated distally, usually ± bracteolate, glabrous or stipitate-glandular and/or tomentose.
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Involucres campanulate to urceolate, 5–15+ mm diam.
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Phyllaries 27–50 in 3–5+ series, unequal, green, deltate to lanceolate or linear, margins sometimes narrowly scarious (sometimes ciliate), apices acute (faces glabrous or stipitate to setose-glandular).
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Receptacles flat to convex, ± pitted, glabrous, epaleate.
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Florets [30–] 80–250 [–450+];
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corollas yellow to orange (not deliquescent; anthers yellowish to brownish apically).
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Cypselae stramineous or reddish to dark-brown, ± compressed, mostly oblong or oblanceoloid to ellipsoid, beaks 0, ribs usually 2–4 (–5+) on each face, faces sometimes transversely rugulose or tuberculate, glabrous;
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pappi tardily falling or persistent, of 80–100+, white, smooth or barbellulate bristles (some flattened, ± setiform scales), outer usually distinct in ± 1 series, inner basally coherent or connate, in 2–3+ series.
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stipitate-glandular
sometimes
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rugulose
sometimes transversely
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