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.

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 07/16/2024).