Calflora Taxon Report
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
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Polygonum
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Red Fir Forest, Lodgepole Forest, Subalpine Forest
Name Status:
Accepted by PLANTS
Alternate Names:
PLANTSAconogonon davisiae
PLANTSAconogonum davisiae var. glabrum
PLANTSAconogonum davisiae
PLANTSAconogonum newberryi
PLANTSPolygonum newberryi var. glabrum
More …
Information about Polygonum davisiae from other sources
Nursery availability from CNPLX
Commercial availability unknown.

USDA PLANTS Profile (PODA)

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ID Tips on PlantID.net

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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