logo Calflora, a 501c3 non-profit
Taxon  Report  
SIGN IN - REGISTER
Polygonum aviculare  L.  ssp. depressum  (Meisn.) Arcang.
Prostrate knotweed
© 2016 Barbara Boethling
© 2021 Ron Vanderhoff
© 2014 Richard Chasey
© 2016 Barbara Boethling
© 2021 Ron Vanderhoff
© 2022 R.A. Chasey
© 2014 Toni Corelli
© 2022 R.A. Chasey
© 2014 Vertin Alvarez
© 2009 Avis Boutell
© 2008 Neal Kramer
Polygonum aviculare ssp. depressum is an annual or perennial herb that is not native to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Parent: Polygonum aviculare
Genus: Polygonum
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Equally likely to occur in wetlands and non wetlands

Habitat: disturbed

Communities: wetland-riparian, weed, characteristic of disturbed places

Name Status:
Accepted by JEF
Alternate Names:
JEFPolygonum aequale
JEFPolygonum arenastrum
JEFPolygonum calcatum
JEFPolygonum microspermum
POWOPolygonum arenastrum
Information about  Polygonum aviculare ssp. depressum from other sources

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 03/29/2025).