Calflora, a 501c3 non-profit
Distribution by County   11944    
Polygonum sawatchense  Small  ssp. oblivium  Costea & Tardif
Knotweed
Polygonum sawatchense ssp. oblivium is an annual or perennial herb that is native to California.
Record Count by County

Alpine: 1 Lassen: 5 Placer: 4 Tehama: 1
Butte: 2 Madera: 1 Plumas: 4 Trinity: 1
Fresno: 1 Mariposa: 2 San Bernardino: 8 Tulare: 5
Humboldt: 3 Modoc: 4 San Diego: 2 Tuolumne: 1
Inyo: 3 Mono: 6 Shasta: 3 Ventura: 3
Kern: 1 Nevada: 5 Siskiyou: 2

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: 11/23/2024).