Polygonum davisiae Calflora

Distribution by County 6747

Polygonum davisiae W. H. Brewer ex A. Gray

(not an active name)

Davis knotweed, Davis' knotweed

Polygonum davisiae is a perennial herb that is native to California, and also found elsewhere in western North America.

also called Aconogonon davisiae

Record Count by County


Alpine: 47	Humboldt: 3	Nevada: 38	Siskiyou: 14
Amador: 1	Lake: 1	Placer: 25	Tehama: 10
Butte: 15	Lassen: 7	Plumas: 17	Trinity: 14
Colusa: 2	Madera: 2	Shasta: 29	Tuolumne: 1
El Dorado: 5	Mendocino: 3	Sierra: 7

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).