Polygonum douglasii ssp. spergulariiforme Calflora

Distribution by County 6753

Polygonum douglasii Greene ssp. spergulariiforme (Meisn. ex Small) J. C. Hickman

(not an active name)

Scatter knotweed, Spurge knotweed, Spurry knotweed

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

also called Polygonum spergulariiforme

Record Count by County


Butte: 18	Marin: 1	Nevada: 20	Siskiyou: 9
El Dorado: 3	Mendocino: 7	Placer: 4	Sonoma: 4
Humboldt: 24	Modoc: 2	Plumas: 16	Tehama: 15
Lake: 9	Mono: 2	Shasta: 3	Trinity: 25
Lassen: 19	Napa: 1	Sierra: 15	Tuolumne: 5

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: 11/21/2024).