Onopordum Linnaeus (Q3034)
Onopordum is a taxon with the rank genus within the tribe Cardueae
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Onopordum Linnaeus
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Onopordum is a taxon with the rank genus within the tribe Cardueae
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Statements
taxon/id/Onopordum Linnaeus
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Onopordum Linnaeus
Onopordum
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 usually erect, ± branched, spiny-winged.
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winged-petiolate (basal) or sessile (cauline);
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blade bases narrowing, margins pinnately lobed or divided and dentate, teeth and lobes tipped with stout spines.
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Heads discoid, borne singly or in corymbiform arrays;
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(peduncles 0 or spiny winged).
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Involucres hemispheric to ovoid or spheric.
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Phyllaries many in 8–10+ series, linear to ovate, entire, tapered to stiff spines, middle and outer often spreading or reflexed.
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Receptacles flat to convex, epaleate, not bristly, alveolate with apically fringed pits.
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corollas white or purple, actinomorphic or weakly zygmorphic, tubes slender, throats cylindric or narrowly goblet-shaped, lobes linear;
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anther bases acute-tailed, apical appendages subulate;
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style-branches: fused portions with minutely hairy nodes, long, cylindric, minutely papillate, distinct portions minute.
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Cypselae ± cylindric, 4–5-angled, usually ± transversely roughened, glabrous, attachment scars basal;
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pappi falling in ring, of many barbed or plumose bristles, basally connate.
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roughened
usually more or less transversely
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