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 Rus, Czechoslovakia, Denmark, East Aegean Is., France, Germany, Great Britain, Greece, Hungary, India, Netherlands, Newfoundland, Poland

Synonyms

Heterotypic Synonyms

Publications

POWO follows these authorities in accepting this name:

  • 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://www.newfoundland-labradorflora.com/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.

Kew Backbone Distributions

  • Meades, S.J. & Brouillet, L. (2019). Annotated Checklist of the Vascular Plants of Newfoundland and Labrador https://www.newfoundland-labradorflora.com/checklist/.

Other Data

Other Kew resources that provide information on this taxon:

Sources

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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