Calflora, a 501c3 non-profit
Distribution by County   10668    
Polygonum aviculare  L.  ssp. buxiforme  (Small) Costea & Tardif
Prostrate knotweed
Polygonum aviculare ssp. buxiforme is an annual or perennial herb that is not native to California.

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 12/01/2022).