Sonchus arvensis Linnaeus (Q3168)
Sonchus arvensis is a taxon with the rank species within the genus Sonchus
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Sonchus arvensis Linnaeus
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Sonchus arvensis is a taxon with the rank species within the genus Sonchus
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Statements
taxon/id/Sonchus arvensis Linnaeus
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Sonchus arvensis Linnaeus
Sonchus arvensis
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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CA-AB
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CA-BC
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CA-MB
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CA-NB
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CA-NS
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CA-NT
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CA-NL
Nfld. and Labr. (Nfld.)
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CA-ON
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CA-PE
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CA-QC
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CA-SK
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CA-YT
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US-AK
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US-CA
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US-CO
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US-CT
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US-DE
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US-ID
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US-IL
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US-IN
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US-IA
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US-KS
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US-KY
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US-ME
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US-MA
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US-MD
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US-MI
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US-MN
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US-MS
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US-MO
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US-MT
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US-NC
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US-ND
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US-NH
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US-NJ
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US-NY
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US-NE
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US-NV
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US-OH
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US-OR
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US-PA
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US-RI
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US-SD
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US-TN
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US-UT
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US-VA
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US-VT
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US-WV
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US-WA
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US-WI
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US-WY
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Stem-bases hard, sometimes ± woody.
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Leaves: blades of mid cauline oblong to lanceolate, (3–) 6–40 × 2–15 cm, bases auriculate, auricles straight or curved, rounded, margins usually pinnately lobed, lobes ± deltate, not constricted at bases, terminals usually larger than laterals, dentate or entire.
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Peduncles sessile or stipitate-glandular.
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Involucres 10–17+ mm.
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Phyllaries sessile or stipitate-glandular.
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Corollas: ligules ± equaling tubes.
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Cypselae dark-brown, oblanceoloid to ellipsoid, 2.5–3.5 mm, ribs 4–5 (+) on each face, faces transversely rugulose to tuberculate across and between ribs;
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pappi 8–14 mm. 2n = 36, 54.
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transversely rugulose
tuberculate
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