Helianthus × laetiflorus

cheerful sunflower
Head
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Heliantheae
Genus:	Helianthus
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 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]

Description

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

References

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 2015-02-25. 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.