Calflora, a 501c3 non-profit
Distribution by County   6760    
Polygonum paronychia  Cham. & Schltdl.
Beach knotweed,   Dune knotweed
Polygonum paronychia is a perennial herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Del Norte: 21 Mendocino: 51 San Luis Obispo: 12 Solano: 2
Humboldt: 73 Monterey: 49 San Mateo: 50 Sonoma: 13
Marin: 25 San Francisco: 117 Santa Barbara: 1

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/27/2023).