Polygonum austiniae, common name Mrs. Austin's knotweed, is a plant species in the buckwheat family. It is native to western Canada and the western United States, from Alberta and British Columbia south as far as California, Nevada, and Wyoming.Biota of North America Program 2014 county distribution map
Polygonum austiniae is an branching herb up to tall.Flora of North America, Polygonum austiniae Greene, 1885. (as austinae). Mrs. Austin's knotweed Greene, Edward Lee. 1885. Bulletin of the California Academy of Sciences 1(4A): 212 Polygonum austinae Its habitats include sagebrush plains and ponderosa-pine forest.
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