Symphyotrichum praealtum

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Symphyotrichum praealtum

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. Symphyotrichum
Species:
S. praealtum
Binomial name
Symphyotrichum praealtum
Symphyotrichum praealtum native distribution map: Canada — Ontario; Mexico — Chihuahua, Coahuila, and Nuevo León; US — Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Virginia, West Virginia, and Wisconsin.
Native distribution[3]
Synonyms[2]

Basionym

  • Aster praealtus Poir.
Alphabetical list
    • Aster carneus Torr. & A.Gray ex Benth.
    • Aster carneus var. subasper (Lindl.) Torr. & A.Gray
    • Aster coerulescens
      DC.
    • Aster coerulescens var. angustior (Wiegand) Fernald
    • Aster coerulescens var. subasper (Lindl. ex Hook.) Fernald
    • Aster coerulescens var. typicus Cronquist
    • Aster eminens Willd.
    • Aster lanceolatus Nutt.
    • Aster nebraskensis Britton
    • Aster novi-belgii var. litoreus A.Gray
    • Aster obliquus Nees
    • Aster praealtus var. angustior Wiegand
    • Aster praealtus var. coerulescens (DC.) A.G.Jones
    • Aster praealtus var. imbricatior Wiegand
    • Aster praealtus var. nebraskensis (Britton) Wiegand
    • Aster praealtus var. subasper Wiegand
    • Aster praealtus var. texicola Wiegand
    • Aster rigidulus Desf.
    • Aster robustus Nees
    • Aster salicifolius Aiton
    • Aster salicifolius f. coerulescens (DC.) Voss
    • Aster salicifolius f. obliquus (Nees) Voss
    • Aster salicifolius var. stenophyllus E.S.Burgess
    • Aster salicifolius var. subasper (Lindl. ex Hook.) A.Gray
    • Aster salicifolius f. subasper (Lindl. ex Hook.) Voss
    • Aster subasper Lindl.
    • Aster virgatus Nees
    • Symphyotrichum novi-belgii var. litoreum (A.Gray) G.L.Nesom
    • Symphyotrichum praealtum subsp. angustior (Wiegand) A.Haines
    • Symphyotrichum praealtum var. angustior (Wiegand) G.L.Nesom
    • Symphyotrichum praealtum var. nebraskense (Britton) G.L.Nesom
    • Symphyotrichum praealtum var. subasperum (Lindl.) G.L.Nesom
    • Symphyotrichum praealtum var. texicola (Wiegand) G.L.Nesom

Symphyotrichum praealtum (formerly Aster praealtus), known as willowleaf aster and willow aster, is a species of flowering plant in the aster family Asteraceae. It is native to North America and introduced in Europe.[3]

Description

Symphyotrichum praealtum is a

disc florets are cream or pale yellow.[3]

Taxonomy

Symphyotrichum praealtum was formerly included in the large genus Aster as Aster praealtus. However, this broad circumscription of Aster is

polyphyletic and the North American asters are now mostly classified in Symphyotrichum and several other genera.[6]

Several varieties of Symphyotrichum praealtum have been recognized, but not consistently. Hybridization with Symphyotrichum lanceolatum and Symphyotrichum firmum has been reported.[3]

Distribution and habitat

Willowleaf aster is native to much of the eastern and central United States, to the Mexican states of Chihuahua, Coahuila, and Nuevo León, and to the extreme southern portion of Ontario, Canada. It has been introduced to central Europe.[3]

Symphyotrichum praealtum is found in moist, open habitats including wet

oak savannahs, ditches, and roadsides.[3] Periodic disturbance, such as wildfire, drought, or human clearing, is required to maintain open habitats suitable for the species.[5]

Ecology

Great golden digger wasp
on S. praealtum flower

Symphyotrichum praealtum spreads via rhizomes to form large

Conservation

Willowleaf aster is considered globally secure.

Citations

References

  • Brouillet, L.; Semple, J.C.; Allen, G.A.; Chambers, K.L.; Sundberg, S.D. (2006). "Symphyotrichum praealtum". 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 29 September 2018 – via eFloras.
  • Jones, J. (2013). "Recovery strategy for the Willowleaf Aster (Symphyotrichum praealtum) in Ontario". Ontario Recovery Strategy Series. Prepared for the Ontario Ministry of Natural Resources, Peterborough, Ontario. pp. vi + 29. Retrieved 7 February 2020.
  • NatureServe (2 July 2021). "Symphyotrichum praeltum - Willow Aster". NatureServe Explorer (explorer.natureserve.org). NatureServe. Retrieved 6 July 2021.
  • POWO (2019). "Symphyotrichum praealtum (Poir.) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2 July 2021.
  • Reznicek, A.A.; Voss, E.G.; Walters, B.S., eds. (February 2011). "Symphyotrichum praealtum". Michigan Flora Online. University of Michigan Herbarium. Retrieved 7 February 2020.
  • Semple, J.C. (27 April 2021). "An overview of "asters" and the Tribe Astereae". www.uwaterloo.ca. Ontario. Archived from the original on 27 May 2021. Retrieved 6 July 2021.