Calflora, a 501c3 non-profit
Distribution by County   12801    
Polygonum buxiforme  Small

(not an active name)
Box knotweed
Polygonum buxiforme is an annual or perennial herb that is not native to California.
also called Polygonum aviculare ssp. buxiforme
Record Count by County

Alpine: 13 Inyo: 6 Mono: 26 Sierra: 40
Amador: 2 Kern: 6 Monterey: 1 Siskiyou: 63
Butte: 22 Lake: 1 Nevada: 52 Sonoma: 5
Colusa: 3 Lassen: 28 Placer: 36 Tehama: 20
Del Norte: 15 Los Angeles: 1 Plumas: 67 Trinity: 22
El Dorado: 32 Madera: 3 Riverside: 5 Tulare: 41
Fresno: 28 Mariposa: 16 San Bernardino: 55 Tuolumne: 18
Glenn: 1 Mendocino: 4 San Diego: 11 Ventura: 1
Humboldt: 32 Modoc: 46 Shasta: 4 Yuba: 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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/18/2024).