Also known as Douglas Knotweed · Douglas's Knotweed
Polygonum douglasii is a slender, erect annual herb native to western North America. It has narrow, alternate leaves and small, inconspicuous greenish-pink flowers in.
Photos of Douglas' Knotweed (Polygonum douglasii)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| kingdom | Plantae |
| division | Tracheophyta |
| class | Magnoliopsida |
| order | Caryophyllales |
| family | Polygonaceae |
| genus | Polygonum |
| species | Polygonum douglasii |
