Helianthus × laetiflorus

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Cheerful sunflower
Helianthus x laetiflorus 001.JPG
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Helianthus
Species: H. x laetiflorus
Binomial name
Helianthus × laetiflorus
Pers. 1807
  • 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 daisy family, 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]


Helianthus × laetiflorus is a herbaceous plant with alternate, simple leaves, on green stems. The flowers are yellow, borne in late summer.[5][6]


  1. ^ The Plant List, Helianthus × laetiflorus Pers.
  2. ^ "Helianthus × laetiflorus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 21 July 2015. 
  3. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17. 
  4. ^ Biota of north America Program 2014 state-level distribution map
  5. ^ Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Flora of Canada. National Museums of Canada, Ottawa.
  6. ^ Gleason, H. A. 1968. The Sympetalous Dicotyledoneae. vol. 3. 596 pp. In H. A. Gleason New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. New York Botanical Garden, New York.