Polygonum shastense
| Polygonum shastense | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Core eudicots |
| Order: | Caryophyllales |
| Family: | Polygonaceae |
| Genus: | Polygonum |
| Species: | P. shastense |
| Binomial name | |
| Polygonum shastense W.H.Brewer |
|
Polygonum shastense is a species of flowering plant in the knotweed family known by the common name Shasta knotweed. It is native to sections of Oregon, Nevada, and California, where it grows in rocky and gravelly mountainous habitat.
[edit] Description
Polygonum shastense is a small shrub producing branching tough, gnarled brown stems reaching a maximum length of 40 centimeters, growing prostrate along the ground or somewhat upright. The leaves lining the slender stems are uniform in size and distribution, not clustered or reduced in size near stem tips. They are lance-shaped with two raised ridges on the upper surface, each leaf measuring less than 2 centimeters long. Leaves have stipules which are widened into membranous ochrea wrapped around the leaf bases. Flowers occur in clusters in upper leaf axils. Each is just under a centimeter wide and has five green-veined, rounded white or pink lobes.
[edit] External links
- Jepson Manual Treatment - Polygonum shastense
- USDA Plants Profile; Polygonum shastense
- Flora of North America
- Polygonum shastense - Photo gallery
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