Symphyotrichum eatonii

Symphyotrichum eatonii (formerly Aster eatonii) is a species of aster known by the common name Eaton's aster.[3] It is native to much of western North America from British Columbia to Saskatchewan, the Sierra Nevada in California, the Rocky Mountains region, to Arizona and New Mexico, where it grows in many habitats, especially wet areas such as meadows and near ditches.[4]

Symphyotrichum eatonii

Secure  (NatureServe)[1]
Scientific classification Edit this 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. Occidentales
Species:
S. eatonii
Binomial name
Symphyotrichum eatonii
Symphyotrichum eatonii distribution shaded green: Canada — Alberta, British Columbia, and Saskatchewan; US — Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming.
Native distribution[2]
Synonyms[2]
  • Aster bracteolatus Nutt.
  • Aster cordalenus L.F.Hend.
  • Aster eatonii (A.Gray) Howell
  • Aster foliaceus var. eatonii A.Gray
  • Aster mearnsii Rydb.
  • Symphyotrichum bracteolatum (Nutt.) G.L.Nesom

Description

Symphyotrichum eatonii is a perennial herb growing 40–100 centimeters (1 foot 4 inches – 3 feet 3 inches) from a short rhizome. The thin leaves are up to 20 centimeters (8 inches) long, lance-shaped, and pointed at the tips. Some of the leaves and the upper parts of the stem are hairy.[4]

The inflorescence holds several flower heads containing many white to pink ray florets around a center of yellow disk florets. The fruit is a hairy cypsela that resembles an achene.[4]

Taxonomy

Symphyotrichum eatonii is classified in the subgenus Symphyotrichum, section Occidentales.[4] As of June 2021, Catalogue of Life, Flora of North America, and Jepson eFlora accepted this species as Symphyotrichum bracteolatum,[5][4][6] while POWO, NatureServe, and Canadian botanist John C. Semple circumscribed to S. eatonii.[2][1][7]

Citations

References

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