Calflora Taxon Report
Aconogonon davisiae  (W. H. Brewer ex A. Gray) Sojâk
Davis knotweed
photo on Calflora
2011 Steve Matson
photo on Calflora
2023 Alaine Arslan
photo on Calflora
2011 Steve Matson
photo on Calflora
2019 Talila Golan
photo on Calflora
2005 Steve Matson
photo on Calflora
2015 Todd Ramsden
photo on Calflora
2019 Talila Golan
photo on Calflora
2018 Mary Conway
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2018 Mary Conway
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2022 Cynthia Powell
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2020 Cynthia Powell
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2022 Cynthia Powell
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2019 R.A. Chasey
photo on Calflora
2019 R.A. Chasey
photo on Calflora
2023 Jane Cohn
photo on Calflora
2019 Talila Golan
photo on Calflora
2011 Steve Matson
photo on Calflora
2011 Steve Matson
photo on Calflora
2005 Steve Matson
photo on Calflora
2005 Steve Matson
photo on Calflora
2015 Todd Ramsden
photo on Calflora
2015 Todd Ramsden
photo on Calflora
2015 Todd Ramsden
photo on Calflora
2017 Sheri Hagwood
Aconogonon davisiae is a perennial herb that is native to California, and also found elsewhere in western North America.
also called Polygonum 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: Aconogonon
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot
Communities: Red Fir Forest, Lodgepole Forest, Subalpine Forest
Name Status:
Accepted by JEF
Alternate Names:
JEFAconogonon davisiae var. glabrum
iNatKoenigia davisiae
JEFPolygonum davisiae
POWOKoenigia davisiae
PLANTSPolygonum davisiae
External links:
Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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