White-margined Knotweed, Pokeweed Fleeceflower
Polygonum polygaloides ssp. polygaloides
Synonyms: Polygonum confertiflorum, Polygonum kelloggii, Polygonum kelloggii var. confertiflorum, Polygonum watsonii
The photo above shows white-margined knotweed as seen at Buckhorn Lookout in the Wallowa-Whitman National Forest in northeastern Oregon........July 9, 2007. Note the prominent white margins to the bracts subtending the flowers. The flowers are also shorter than these bracts.
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White-margined knotweed as seen in vernal pools along the old Sprague Highway between Sprague and Fishtrap.....May 11, 2016.
White-margined knotweed as seen in vernally moist swales along the Stubblefield Trail near the northeastern corner of the southern Pine Lakes, Turnbull National Wildlife Refuge.......July 4, 2018.
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White-margined knotweed as seen at Buckhorn Lookout in the Wallowa-Whitman National Forest in northeastern Oregon..........July 9, 2007.
Paul Slichter