Harman Patil (Editor)

Polygonum pensylvanicum

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Kingdom  Plantae
Genus  Polygonum
Higher classification  Knotweed
Order  Caryophyllales
Family  Polygonaceae
Scientific name  Polygonum pensylvanicum
Rank  Species
Polygonum pensylvanicum MinneFlora Pennsylvania Smartweed Polygonum pensylvanicum
Similar  Knotweed, Polygonaceae, Persicaria hydropiperoides, Persicaria lapathifolia, Spotted ladysthumb

Polygonum pensylvanicum (syn. Persicaria pensylvanica) is a species of flowering plant in the buckwheat family, Polygonaceae. It is native to parts of North America, where it is widespread in Canada and the United States. It has also been noted as an introduced species in parts of Europe and South America. Common names include Pennsylvania smartweed and pinkweed.


Polygonum pensylvanicum Polygonum pensylvanicum Wikipedia


Polygonum pensylvanicum MinneFlora Pennsylvania Smartweed Polygonum pensylvanicum

Pennsylvania smartweed is a variable annual herb reaching 10 cm (3.9 in) to 2 m (6.6 ft) tall. The upright, ribbed stems are branching or unbranched. The lance-shaped leaves reach up to about 2 cm (0.79 in) in length. The blade may be marked with a dark blotch. The brownish ochrea at the base is up to 2 cm (0.79 in). The inflorescences grow at the top of the stem and from the leaf axils. The flowers have five pinkish or greenish tepals each a few millimeters long.

This plant grows in moist, disturbed habitat types, such as ponds, reservoirs, riverbanks, irrigated fields, and ditches.


Polygonum pensylvanicum httpsplantsusdagovgallerystandardpope2005

This plant is an important part of the habitat for waterfowl and other birds, which use it for food and cover. At least 50 species of birds have been observed feeding on the seeds, including ducks, geese, rails, bobwhites, mourning dove, and ring-necked pheasant. The seeds and other parts are eaten by mammals such as the white-footed mouse, muskrat, raccoon, and fox squirrel.

Traditional native American medicine

Polygonum pensylvanicum Polygonum pensylvanicum page

Native Americans had various uses for the plant. The Chippewa used it for epilepsy. The Iroquois used it for horse colic. The Menominee took a leaf infusion for hemorrhage of blood from the mouth and post-partum healing. The Meskwaki used it on bleeding hemorrhoids.

Polygonum pensylvanicum Polygonum pensylvanicum page
Polygonum pensylvanicum Plants Profile for Polygonum pensylvanicum Pennsylvania smartweed
Polygonum pensylvanicum Wetland Plants of Wisconsin Polygonum pensylvanicum Pennsylvania


Polygonum pensylvanicum Wikipedia

Similar Topics
Persicaria hydropiperoides
Persicaria lapathifolia