Arctium Linnaeus (Q2974)
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Arctium is a taxon with the rank genus within the tribe Cardueae
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Arctium Linnaeus
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Arctium is a taxon with the rank genus within the tribe Cardueae
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Statements
taxon/id/Arctium Linnaeus
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Arctium Linnaeus
Arctium
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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herbage not spiny.
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Stems erect, openly branched, branches ascending.
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gradually smaller distally;
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blade margins entire or dentate (pinnately lobed or dissected), faces abaxially resin-gland-dotted, adaxially often tomentose.
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Heads discoid, in leafy-bracted racemiform to paniculiform or corymbiform arrays.
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(Peduncles 0 or 1–9 cm.) Involucres spheric to ovoid.
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Phyllaries many in 9–17 series, outer and mid narrowly linear, bases appressed, margins entire, apices stiffly radiating, hooked-spiny tipped, inner linear, ascending or erect, straight-tipped.
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Receptacles ± flat, epaleate, bearing subulate scales.
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Florets (5–) 20–40+;
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corollas pink to ± purple, glabrous or glandular-puberulent, tubes elongate, throats campanulate, lobes narrowly triangular, ± equal;
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anther bases tailed, apical appendages ovate, obtuse to acute;
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Cypselae obovoid, ± compressed, rough or ribbed, glabrous, attachment scars basal;
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pappi falling, of many bristles in 2–4 series.
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smaller
gradually; distally
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racemiform
paniculiform or corymbiform
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