Rudbeckia triloba Linnaeus (Q2788)
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Rudbeckia triloba is a taxon with the rank species within the section Rudbeckia sect. Rudbeckia
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| English |
Rudbeckia triloba Linnaeus
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Rudbeckia triloba is a taxon with the rank species within the section Rudbeckia sect. Rudbeckia
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Statements
taxon/id/Rudbeckia triloba Linnaeus
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Rudbeckia triloba Linnaeus
Rudbeckia triloba
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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CA-QC
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US-AL
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US-AR
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US-CO
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US-CT
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US-DE
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US-FL
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US-GA
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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-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-NC
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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-TN
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US-TX
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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-WI
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Stems glabrate to hirsute or strigose (hairs 1–2 mm, basal retrorse, others spreading).
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Leaves: blades ovate to subcordate or elliptic (not lobed), margins serrate, apices acute to acuminate, faces hirsute to strigose;
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basal petiolate, 10–30 × 2–8 cm, bases truncate or rounded to cordate;
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cauline petiolate or sessile, ovate to elliptic, proximal usually 3–5-lobed, 2–20 × 1.5–8 cm (smaller, fewer lobed distally), bases rounded to attenuate, sometimes clasping.
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Heads (10–30) in paniculiform arrays.
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Phyllaries to 1.5 cm (faces moderately hirsute).
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Receptacles conic to subhemispheric;
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paleae 5–6.5 mm, apices cuspidate (tips awnlike, 1.5+ mm), glabrous.
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Ray-florets 8–15;
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laminae (corollas yellow to yellow-orange with basal maroon splotches) linear to oblanceolate, 8–30 × 3–8 mm, abaxially sparsely strigose.
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Discs 8–15 × 10–20 mm.
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Disc-florets 150–300+;
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corollas yellowish green basally, otherwise brown-purple, 3–4 mm;
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style-branches ca. 1.2 mm, apices obtuse to rounded.
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Cypselae 1.9–2.8 mm;
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pappi coroniform, to 0.2 mm.
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glabrate
hirsute or strigose
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subcordate or elliptic
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