Helianthus × laetiflorus

Cheerful sunflower
Head
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Helianthus
Species:
H. × laetiflorus
Binomial name
Helianthus × laetiflorus
Pers. 1807
Synonyms[1]
  • Helianthus laetiflorus Pers.
  • Helianthus severus E.Watson
  • Helianthus superbus E.Watson
  • Helianthus tricuspis Elliott

Helianthus × laetiflorus, the cheerful sunflower[2] or perennial sunflower,[3] is a plant in the family of Asteraceae. It is widespread in scattered locations across much of Canada from Newfoundland to British Columbia, and the central and eastern United States as far south as Texas and Georgia.[4] This species is also commonly cultivated and may escape cultivation and be found in areas outside of its core range.[5]

Description

Helianthus × laetiflorus is a herbaceous plant with alternate, simple leaves, on green stems. The flowers are yellow, borne in late summer.[6][7] This species is generally considered to be of hybrid origin, with the two parental species being Helianthus tuberosus and Helianthus pauciflorus.[5]

References

  1. ^ "Helianthus × laetiflorus Pers.". The Global Compositae Checklist (GCC) – via The Plant List. Note that this website has been superseded by World Flora Online
  2. ^ NRCS. "Helianthus × laetiflorus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 21 July 2015.
  3. ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  4. ^ "Helianthus X laetiflorus". State-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  5. ^ a b "Helianthus x_laetiflorus in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2024-08-08.
  6. ^ Scoggan, H. J. (1979). "Part 4, Dicotyledoneae: Loasaceae to Compositae". Flora of Canada. Ottawa: National Museums of Canada. pp. 1117–1711.
  7. ^ Gleason, H. A. (1968). "The Sympetalous Dicotyledoneae". In Gleason, H. A. (ed.). New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. Vol. 3. New York Botanical Garden.


Stub icon

This Heliantheae article is a stub. You can help Wikipedia by expanding it.