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Polygonum polystachyum

Naming
Scientific name: 
Polygonum polystachyum
Primary Common name: 
Himalayan knotweed
Characteristics
Species Category: 
herbaceous
Current Extent: 
limited
Likelihood of Introduction: 
n/a (already in CA)
TSN: 
20919
References
Sources: 
CDFA Noxious Weed List
Oregon Noxious Weed List
Washington Noxious Weed List