| Cheerful sunflower | |
|---|---|
 | |
| Head | |
Scientific 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, 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]
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
- ↑ "Helianthus × laetiflorus Pers.". The Global Compositae Checklist (GCC) – via The Plant List. Note that this website has been superseded by World Flora Online
- ↑ USDA, NRCS (n.d.). "Helianthus × laetiflorus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 21 July 2015.
- ↑ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ↑ "Helianthus X laetiflorus". State-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
- ↑ Scoggan, H. J. (1979). "Part 4, Dicotyledoneae: Loasaceae to Compositae". Flora of Canada. Ottawa: National Museums of Canada. pp. 1117–1711.
- ↑ 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.
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