Bidens eatonii Fernald (Q2562)
Bidens eatonii is a taxon with the rank species within the genus Bidens
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Bidens eatonii Fernald
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Bidens eatonii is a taxon with the rank species within the genus Bidens
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taxon/id/Bidens eatonii Fernald
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Bidens eatonii Fernald
Bidens eatonii
Fernald
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-NB
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Hinds, H.R. 2000. Flora of New Brunswick : a manual for the identification of the vascular plants of New Brunswick. 2nd edition. Biology Department, University of New Brunswick, Fredericton. 699 pp.
CA-QC
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Marie-Victorin, Fr. 1995. Flore laurentienne. 3e éd. Mise à jour et annotée par L. Brouillet, S.G. Hay, I. Goulet, M. Blondeau, J. Cayouette et J. Labrecque. Gaétan Morin éditeur. 1093 pp.
CA-NB
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CA-PE
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CA-QC
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US-CT
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US-ME
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US-MA
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US-NJ
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US-NY
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US-RI
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Leaves: petioles (narrowly, if at all, winged) 10–35+ mm;
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blades lanceovate to lanceolate, (20–) 35–100+ × 5–25+ mm, sometimes with 1–4 lobes near bases, bases cuneate, margins serrate, seldom ciliate, apices attenuate, faces glabrous.
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Heads borne singly or in 2s or 3s.
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Peduncles 10–35+ mm.
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Calyculi of (2–) 3–5 ± erect, oblanceolate to linear, ± foliaceous bractlets or bracts 7–25 (–70+) mm, margins sometimes obscurely ciliate, abaxial faces glabrous.
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Involucres usually cylindric to campanulate, rarely hemispheric, (4–) 8–10 (–12) × (4–) 7–9 mm.
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Phyllaries 5–6, oblong to lanceovate, 8–13 mm.
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Ray-florets usually 0, sometimes 1–3+;
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laminae yellow-orange, 2–5 (–10) mm.
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Disc-florets 7–30+;
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corollas yellowish, 2.5–3.5 mm.
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Cypselae blackish to purplish or red-brown,± flattened, sometimes 3–4-angled, narrowly oblanceolate, outer 5.5–10 mm, inner 6.5–11 mm, margins barbed or ciliate (proximally antrorsely, distally retrorsely), apices ± truncate, faces ± 1-nerved, glabrous or sparsely setulose, often ± striate and/or tuberculate, pappi of 2–4 (–5) erect to spreading, antrorsely or retrorsely barbed awns 3–4.5 mm. 2n = 48.
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blackish
purplish or red-brown
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