| Polygonum bolanderi | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Core eudicots |
| Order: | Caryophyllales |
| Family: | Polygonaceae |
| Genus: | Polygonum |
| Species: | P. bolanderi |
| Binomial name | |
| Polygonum bolanderi W.H.Brewer |
|
Polygonum bolanderi is an uncommon species of flowering plant in the knotweed family known by the common name Bolander's knotweed.
It is endemic to California, where it is known from a few northern counties, particularly Napa County and the northern Sierra Nevada region. It can be found in open, rocky habitat types.
Polygonum bolanderi is a small shrub producing numerous very thin twiglike branches up to about half a meter long from a tough, tangled base. The slender branches are lined with small, narrow, pointed leaves which are alternately arranged and mostly found clustered toward the tips of the twigs. The leaves have narrow, fringed stipules with sharp points. Flowers occur in upper leaf axils during summer and fall. They are whitish or pink with dark midveins on each corolla lobe.