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Polygonum douglasii Greene  
Family: Polygonaceae
Douglas' knotweed, more... (fr: renouée de Douglas variété de Douglas)
[Polygonum buxiforme var. montanum (Small) R.J. Davis, morePolygonum douglasii ssp. douglasii Greene, Polygonum douglasii var. latifolium (Engelm.) Greene, Polygonum emaciatum A. Nelson, Polygonum montanum Small]
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Polygonum douglasii
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