''Polygonum cascadense'' is a species of flowering plant in the
buckwheat family
The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus ''Polygonum'', and was first used by Antoine Laurent de Jussieu in 1789 ...
known by the common name Cascade knotweed. It has been found only in the State of
Oregon
Oregon () is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idah ...
in the northwestern United States, in the
Cascades and in the
Blue Mountains.
Description
''Polygonum cascadense'' is an herb with a green or red zigzag stem up to tall. It produces small groups of white flowers with red anthers.
Flora of North America, ''Polygonum cascadense'' W. H. Baker, 1949. Cascade knotweed
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References
External links
photos
* ttp://www.botany.hawaii.edu/faculty/carr/ofp/pol_cas.htm Oregon Flora Image Project, University of Hawai'iphotos
cascadense
Endemic flora of the United States
Flora of Oregon
Flora of the Cascade Range
Plants described in 1949
Flora without expected TNC conservation status
{{Polygonaceae-stub