Distribution by County   6738    
Polygonum argyrocoleon  Kunze
Persian knotweed,   Silver sheath knotweed,   Silversheath knotweed
Polygonum argyrocoleon, a dicot, is an annual 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: 06/30/2022).