Taxon: Persicaria pensylvanica (L.) M. Gómez

Genus: Persicaria
Family: Polygonaceae
Subfamily: Polygonoideae
Tribe: Persicarieae
Nomen number: 409773
Place of publication: Anales Inst. Segunda Ensen. 2:278. 1896
Link to protologue:
Name Verified on: 29-Aug-2005 by ARS Systematic Botanists. Last Changed: 08-Mar-2017
Species priority site is:
Accessions: 1 in National Plant Germplasm System (GoogleMap)

Common names:

  • Pennsylvania smartweed  (Source: F NAmer) - English
  • pinkweed  (Source: BSBI) - English
  • renouée de Pennsylvanie  (Source: F NAmer) - French
  • Pennsylvanischer-Knöterich  (Source: pers. comm.) - German
  • poligono della Pennsylvania  (Source: pers. comm.) - Italian
  • cataia  (Source: pers. comm.) - Portuguese (Brazil)
  • erva-de-bicho  (Source: pers. comm.) - Portuguese (Brazil)
  • persicaria-do-Brasil  (Source: pers. comm.) - Portuguese (Brazil)
  • kvarnpilört  (Source: Kulturvaxtdatabas) - Swedish

Economic Importance:

  • Weed: potential seed contaminant (fide Weed CIBA, as Polygonum pensylvanicum)

Distributional Range:


  • Northern America

    • Eastern Canada: Canada New Brunswick, Newfoundland, Nova Scotia, Ontario, Quebec
    • North-Central U.S.A.: United States Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin
    • Northeastern U.S.A.: United States Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia
    • Northwestern U.S.A.: United States Colorado, Montana, Wyoming
    • South-Central U.S.A.: United States New Mexico, Texas
    • Southeastern U.S.A.: United States Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia
    • Southwestern U.S.A.: United States Arizona, California, Nevada, Utah
    • Subarctic America: United States Alaska

  • Naturalized


  • Aldén, B., S. Ryman, & M. Hjertson Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource on 2012 (Kulturvaxtdatabas)
  • Botanical Society of the British Isles BSBI taxon database (on-line resource). (BSBI)
  • FNA Editorial Committee Flora of North America. (F NAmer)
  • Galasso, G. 2011. Review of Polygonaceae data for World Economic Plants, ed. 2 (pers. comm.)
  • Groth, D. 2005. pers. comm. (pers. comm.)
  • Iwatsuki, K. et al. Flora of Japan. (F Japan)
  • Kartesz, J. T. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. (L US Can ed2)
  • Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource). (Pl Names)


Check other web resources for Persicaria pensylvanica (L.) M. Gómez :