Polygonum californicum
| Polygonum californicum | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Polygonaceae |
| Genus: | Polygonum |
| Species: | P. californicum
|
| Binomial name | |
| Polygonum californicum Meisn. 1856
| |
| Synonyms[1][2] | |
| |
Polygonum californicum is a species of flowering plant in the buckwheat family known by the common name California knotweed. It is native to the west coast of the United States from Washington, Oregon, and northern and central California, in the Coast Ranges and Sierra Nevada foothills, as far south as Napa and Tulare Counties. It can be found in many types of open habitats.[3][4]
Description
Polygonum californicum is an annual herb producing a slender, angled stem which grows erect to a maximum height near 40 centimeters. The narrow, pointed leaves are mostly located on upper branches of the stem. The leaves have fringed, bristle-tipped stipules attached to their bases. Solitary white or pink flowers occur in upper leaf axils.[5]
References
- ^ The Plant List, Polygonum californicum Meisn.
- ^ Tropicos, Polygonum californicum Meisn.
- ^ "Polygonum californicum Calflora". www.calflora.org. Retrieved 2025-08-16.
- ^ "Wayback Machine". bonap.net. Archived from the original on 2025-06-07. Retrieved 2025-08-16.
- ^ "Polygonum californicum in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2025-08-16.
External links
- Jepson Manual Treatment - Polygonum californicum
- Polygonum californicum - Calphotos Photo gallery, University of California