Helianthus ×laetiflorus Persoon (Q2761)
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Helianthus ×laetiflorus is a taxon with the rank species within the genus Helianthus
| Language | Label | Description | Also known as |
|---|---|---|---|
| English |
Helianthus ×laetiflorus Persoon
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Helianthus ×laetiflorus is a taxon with the rank species within the genus Helianthus
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Statements
taxon/id/Helianthus ×laetiflorus Persoon
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Helianthus ×laetiflorus Persoon
Helianthus ×laetiflorus
Persoon
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
1 reference
CA-AB
1 reference
CA-BC
1 reference
CA-NB
present
introduced
1 reference
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.
Newfoundland, CA
irregular
introduced
1 reference
Meades, S., S.G. Hay & L. Brouillet. 2000. Annotated Checklist of the Vascular Plants of Newfoundland and Labrador. Published in association with A Digital Flora of Newfoundland and Labrador Vascular Plants. http://www.digitalnaturalhistory.com/meades.htm (consulted 2009-09-02) http://www.digitalnaturalhistory.com/meades.htm
CA-NS
1 reference
CA-ON
present
introduced
1 reference
Newmaster, S.G., A. Lehela, M.J. Oldham, P.W.C. Uhlig & S. McMurray. 1998. Ontario Plant List. Ontario Forest Research Institute, Sault Ste. Marie, Ontario. Forest Information Paper No. 123. 550 pp.
CA-PE
1 reference
CA-QC
present
introduced
1 reference
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
1 reference
CA-NL
Nfld. and Labr. (Nfld.)
1 reference
CA-ON
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CA-QC
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US-AL
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US-CT
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US-DE
1 reference
US-DC
1 reference
US-GA
1 reference
US-IL
1 reference
US-IN
1 reference
US-IA
1 reference
US-KS
1 reference
US-KY
1 reference
US-ME
1 reference
US-MD
1 reference
US-MA
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US-MI
1 reference
US-MN
1 reference
US-MO
1 reference
US-MT
1 reference
US-NE
1 reference
US-NH
1 reference
US-NJ
1 reference
US-NY
1 reference
US-NC
1 reference
US-OH
1 reference
US-OK
1 reference
US-OR
1 reference
US-PA
1 reference
US-RI
1 reference
US-SC
1 reference
US-TN
1 reference
US-TX
1 reference
US-VT
1 reference
US-VA
1 reference
US-WV
1 reference
US-WI
1 reference
Stems erect, slightly hairy.
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blades lanceolate to lanceovate, 10–25 × 2–8 cm, bases cuneate, margins serrulate to serrate, abaxial faces sparsely hispid, glanddotted.
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Peduncles 7–14 cm.
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Involucres hemispheric, 14–18 mm diam.
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Phyllaries 25–35, oblong-lanceolate, 7–12 × 3–3.5 mm (strongly unequal), apices acuminate, abaxial faces usually puberulent, glanddotted.
1 reference
Paleae 9–10 mm, entire or 3-toothed (apices reddish).
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Ray-florets 15–20;
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laminae 25–37 mm.
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Disc-florets 75+;
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corollas 7–7.5 mm, lobes reddish (at least at tips);
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anthers dark, appendages dark to yellowish (style-branches yellow).
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Cypselae (seldom formed) 4–5 mm, glabrate;
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pappi of 2 aristate scales 2.5–3.5 mm. 2n = 102.
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