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Symphyotrichum porteri
S. porteri, Larimer County, Colorado
Conservation status
Vulnerable  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Subtribe:	Symphyotrichinae
Genus:	Symphyotrichum
Subgenus:	Symphyotrichum subg. Symphyotrichum
Section:	Symphyotrichum sect. Symphyotrichum
Species:	S. porteri
Binomial name
Symphyotrichum porteri (A.Gray) G.L.Nesom
Native distribution
Synonyms
Aster ericoides var. strictus Porter Aster porteri A.Gray

Symphyotrichum porteri (formerly Aster porteri) is a species of flowering plant in the family Asteraceae endemic to the foothills of the Rocky Mountains in the U.S. states of Wyoming, Colorado, and New Mexico. Commonly known as Porter's aster, it is a perennial, herbaceous plant that may reach 10 to 50 centimeters (4 to 20 inches) tall. Its flowers have white, rarely pinkish, ray florets and yellow, becoming pink then brown, disk florets. S. porteri grows at elevations of 1,800–2,900 meters (5,900–9,500 feet). Its limited range makes it a NatureServe Vulnerable (G3) species, and it is classified Critically Imperiled (S1) in Wyoming.

Citations

1. ^ NatureServe 2021.
2. ^ POWO 2019.
3. USDA 2014.
4. Brouillet et al. 2006.

References

• Brouillet, L.; Semple, J.C.; Allen, G.A.; Chambers, K.L.; Sundberg, S.D. (2006). "Symphyotrichum porteri". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 20. New York and Oxford: Oxford University Press. Retrieved 8 July 2021 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
• NatureServe (2 July 2021). "Symphyotrichum porteri Porter's Aster". NatureServe Explorer (explorer.natureserve.org). Arlington, Virginia: NatureServe. Retrieved 8 July 2021.
• POWO (2019). "Symphyotrichum porteri (A.Gray) G.L.Nesom". Plants of the World Online (www.plantsoftheworldonline.org). Royal Botanic Gardens, Kew. Retrieved 8 July 2021.
• NRCS (2014). "Symphyotrichum porteri". USDA PLANTS Database (plants.usda.gov). United States Department of Agriculture (USDA). Retrieved 7 September 2021.

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• NatureServe vulnerable species
• Symphyotrichum
• Flora of Wyoming
• Flora of Colorado
• Flora of New Mexico
• Flora of the Rocky Mountains
• Plants described in 1880
• Taxa named by Asa Gray
• Astereae stubs