Polygonum sawatchense ssp. sawatchense Calflora

Distribution by County 11038

Polygonum sawatchense Small ssp. sawatchense

Knotweed

Polygonum sawatchense ssp. sawatchense is an annual or perennial herb that is native to California, and also found elsewhere in western North America.

also called Polygonum douglasii ssp. johnstonii

Record Count by County


Alpine: 2	Lake: 1	Placer: 3	Tehama: 1
Butte: 1	Lassen: 13	Plumas: 14	Trinity: 2
Colusa: 1	Madera: 1	San Bernardino: 19	Tulare: 5
El Dorado: 3	Mariposa: 1	San Diego: 9	Tuolumne: 3
Fresno: 2	Modoc: 11	Shasta: 4	Ventura: 3
Humboldt: 3	Mono: 20	Sierra: 2
Inyo: 10	Nevada: 8	Siskiyou: 15

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]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 03/22/2023).