Asteraceae
Helianthus

Helianthus × laetiflorus Pers.

First published in Syn. Pl. 2: 476 (1807)
This hybrid is accepted
The native range of this hybrid is E. Canada to Central & E. U.S.A. It is a perennial and grows primarily in the temperate biome. The hybrid formula is H. pauciflorus × H. tuberosus.

Distribution

Native to:

Alabama, Connecticut, Delaware, District of Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Brunswick, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Québec, Rhode I., South Carolina, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin

Introduced into:

Argentina Northeast, Belgium, Central European Russia, Czechoslovakia, Denmark, East Aegean Is., France, Germany, Great Britain, Greece, Hungary, India, Ireland, Netherlands, Newfoundland, Poland, Portugal, Spain

Synonyms

Heterotypic Synonyms

Classification

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Publications

POWO follows these authorities in accepting this name:

  • Benedi, C. & al. (eds.) in Castroviejo, S. & al. (eds.) (2019). Flora Iberica 16(III): 1453-2353. Real Jardín Botánico, CSIC, Madrid.
  • Ghazanfar, S.A., Edmondson, J.R. & Hind, D.J.N. (eds.) (2019). Flora of Iraq 6: 1-458. Ministry of Agriculture & Agrarian Reform, Baghdad.
  • Knapp, W.M. & Naczi, R.F.C. (2021). Vascular plants of Maryland, USA. A comprehensive account of the state's botanical diversity. Smithsonian Contributions to Botany 113: 1-151.
  • Meades, S.J. & Brouillet, L. (2019). Annotated Checklist of the Vascular Plants of Newfoundland and Labrador https://newfoundland-labradorflora.ca/checklist/.
  • Mirek, Z., Piękoś-Mirkowa, H., Zając, A. & Zając, M (2020). Vascular plants of Poland an annotated checklist: 1-526. W. Szafer institute of botany, Polish academy of sciences, Krakow, Poland.
  • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.
  • Stace, C. (2019). New Flora of the British Isles ed. 4: 1-1266. C & M Floristics.

Flora of Iraq

  • Heiser et al. in Mem. Torr. Bot. Club 22 (3): 137 (1969)
  • Husain & Kasim, Cult. Pl. Iraq: 188 (1975).
  • Pers., Syn. Pl. 2: 476 (1807)

Kew Backbone Distributions

  • Benedi, C. & al. (eds.) in Castroviejo, S. & al. (eds.) (2019). Flora Iberica 16(III): 1453-2353. Real Jardín Botánico, CSIC, Madrid.
  • Meades, S.J. & Brouillet, L. (2019). Annotated Checklist of the Vascular Plants of Newfoundland and Labrador https://newfoundland-labradorflora.ca/checklist/.
  • Stace, C. (2019). New Flora of the British Isles ed. 4: 1-1266. C & M Floristics.

Other Data

Other Kew resources that provide information on this taxon:

Date Reference Identified As Barcode Type Status Has image?
Fr. Rolland [424] Canada K002499781 Yes
Scoggan, H.J. [9957] Canada K002499784 Yes
Butler, T. [s.n.] Canada K002499780 Yes
Hooker, J.D.; Gray, A. [s.n.] United States K002499783 Yes
Patterson, H.N. [s.n.] United States K002499786 Yes
Baldwin, W.K.W.; Breitung, A.J. [3995] Canada K002499785 Yes
s.coll. [s.n.] K002499782 Yes
Wooton, E.O. [s.n.] United States K002499787 Yes

Sources

  • Flora of Iraq

    • Ghazanfar, S. A., Edmondson, J. R. (Eds). (2013-2019). Flora of Iraq, Volumes 5.1, 5.2 and 6.0. Kew Publishing
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Science Photographs

    • Copyright applied to individual images