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Taxon: Symphyotrichum pilosum (Willd.) G. L. Nesom

Genus: Symphyotrichum
Family: Asteraceae (alt.Compositae)
Subfamily: Asteroideae
Tribe: Astereae
Nomen number: 434279
Place of publication: Phytologia 77:289. 1995 ("1994")
Link to protologue:
Name Verified on: 22-Mar-2012 by ARS Systematic Botanists. Last Changed: 22-Mar-2012
Species priority site is: Ornamental Plant Germplasm Center (OPGC)
Accessions: 0 (0 active, 0 available) in National Plant Germplasm System

Common names:

  • awl aster  (Source: Glea Cron ed2) - English
  • frost aster  (Source: F Carolin) - English
  • frost-weed aster  (Source: Asters Gard Guide) - English
  • hairy aster  (Source: Aster OK) - English
  • heath aster  (Source: Aster Ontario) - English
  • Michaelmas daisy  (Source: F WVa) - English
  • nailrod  (Source: F WVa) - English
  • old-field aster  (Source: Aster Ontario) - English
  • Pringle's aster  (Source: Aster Ontario) - English
  • steelweed  (Source: F WVa) - English
  • white heath aster  (Source: F WVa) - English
  • white old-field aster  (Source: F Florida) - English
  • aster poilu  (Source: F NAmer) - French
  • weichhaarige Aster  (Source: Zander Ency) - German

Economic Importance:

  • Environmental: ornamental (as A. pilosus & A. pringlei)
  • Weed:

Distributional Range:


    Northern America
    • EASTERN CANADA: Canada [Ontario, Quebec (s.w.)]
    • NORTHEASTERN U.S.A.: United States [Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Connecticut]
    • NORTH-CENTRAL U.S.A.: United States [Iowa, Kansas, Minnesota (s.e.), Missouri, Nebraska, South Dakota, Illinois, Oklahoma, Wisconsin]
    • SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, District of Columbia, Florida (n.w.), Georgia, Kentucky, Maryland, North Carolina, South Carolina, Virginia, Mississippi, Tennessee]

    Cultivated (also cult.)


    • MIDDLE EUROPE: Belgium, Germany


    • NORTHERN EUROPE: United Kingdom
    • MIDDLE EUROPE: Netherlands
    • SOUTHWESTERN EUROPE: France, Spain

    Northern America
    • EASTERN CANADA: Canada [New Brunswick, Nova Scotia]
    • WESTERN CANADA: Canada [British Columbia]


  1. Chmielewski, J. G. & J. C. Semple 2001. The biology of Canadian weeds. 114. Symphyotrichum pilosum (Willd.) Nesom (Aster pilosus Willd.) Canad. J. Pl. Sci. 81:851-865.
  2. Euro+Med Editorial Committee Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). (EuroMed Plantbase)
  3. FNA Editorial Committee Flora of North America. (F NAmer)
  4. Gleason, H. A. & A. Cronquist Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2. 1991 (Glea Cron ed2)
  5. Jones, A. G. Aster & Brachyactis (Asteraceae) in Oklahoma. (Aster OK)
  6. Nesom, G. L. 1994. Review of the taxonomy of Aster sensu lato (Asteraceae: Astereae), emphasizing the New World species (Phytologia) 77:289.
  7. Picton, P. The gardener's guide to growing Asters. (Asters Gard Guide)
  8. Radford, A. E. et al. Manual of the vascular flora of the Carolinas. (F Carolin)
  9. Semple, J. C. et al. The Asters of Ontario (Compositae: Astereae): Diplactis Raf., Oclemena E. L. Greene, Doellingeria Nees and Aster. (Aster Ontario)
  10. Strausbaugh, T. D. & E. L. Core Flora of West Virginia, ed. 2. (F WVa)
  11. Wunderlin, R. P. Guide to the vascular plants of Florida. 1998 (F Florida)

Check other web resources for Symphyotrichum pilosum (Willd.) G. L. Nesom :

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2019. Germplasm Resources Information Network (GRIN-Taxonomy).
National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=434279. Accessed 22 March 2019.