Difference between revisions of "Silphium perfoliatum Linnaeus (Q2799)"
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Latest revision as of 12:52, 24 June 2022
Silphium perfoliatum is a taxon with the rank species within the genus Silphium
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Silphium perfoliatum Linnaeus
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Silphium perfoliatum is a taxon with the rank species within the genus Silphium
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taxon/id/Silphium perfoliatum Linnaeus
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Silphium perfoliatum Linnaeus
Silphium perfoliatum
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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CA-ON
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US-AL
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US-AR
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US-CT
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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-LA
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US-MA
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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-NC
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US-ND
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US-NJ
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US-NY
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US-NE
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US-OH
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US-OK
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US-PA
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US-SD
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US-TN
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US-TX
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US-VA
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US-VT
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US-WV
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US-WI
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Stems square, glabrous, hispid, or scabrous.
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Leaves: basal caducous;
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cauline usually opposite, rarely whorled (in 3s), petiolate or sessile;
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blades deltate, lanceolate, or ovate, 2–41 × 0.5–24 cm, bases attenuate or truncate (distal connate-perfoliate), margins entire, dentate, or bidentate, apices acuminate to acute, faces scabrous to hispid.
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Phyllaries 25–37 in 2–3 series, outer appressed, apices acute to acuminate, abaxial faces scabrous or hispid.
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Ray-florets 17–35;
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Disc-florets 85–150 (–200);
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Cypselae 8–12 × 5–9 mm;
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pappi 0.5–1.5 mm.
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