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Polygonum californicum
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.
Leathery knotweed · Knotweed · Polygonum albanicum · Polygonum amgense · European knotweed · Oval-leaf knotweed · Austin's Knotweed · Prostrate knotweed · Narrowleaf knotweed · Bidwell's knotweed · Bolander's knotweed · Northern Knotgrass
Text excerpted from the Wikipedia article Polygonum californicum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
