Polygonum lapathifolium Calflora

Taxon Report

Polygonum lapathifolium L.

(not an active name)

Common knotweed, Curlytop knotweed, Willow smartweed, Willow weed

2008 Louis-M. Landry

Polygonum lapathifolium is an annual herb that is native to California, and also found elsewhere in North America and beyond.

also called Persicaria lapathifolia


	Plant Range Observation Search ~1043 records in California Plant Characteristics

Photos on Calflora


Genus:	Polygonum
Family:	Polygonaceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Communities: wetland-riparian, many plant communities

Name Status:
Accepted by PLANTS

Alternate Names:


PLANTS	Persicaria incarnata
PLANTS	Persicaria lapathifolia
PLANTS	Persicaria tomentosa
PLANTS	Polygonum incanum
PLANTS	Polygonum incarnatum
More …

Information about Polygonum lapathifolium from other sources


Nursery availability from CNPLX Commercial availability unknown. USDA PLANTS Profile (POLA4) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
photos / record / common / links 0000 0000 0508 0068:! 2008 Louis-M. Landry:! null:!

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 12/22/2024).