The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Parry's knotweed, prickly knotweed

Polygonum parryi

Flowering time June-July
Habitat Vernal pools, seasonally damp ground at low elevations.
Distribution
Occurring in the east end of the Columbia River Gorge in Washington; south-central Washington to California.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Threatened in Washington (WANHP)
Sibling taxa
P. achoreum, P. austiniae, P. aviculare, P. californicum, P. douglasii, P. erectum, P. fowleri, P. majus, P. minimum, P. nuttallii, P. paronychia, P. polygaloides, P. ramosissimum, P. sawatchense, P. spergulariiforme
Web links