Polygonum polygaloides ssp. confertiflorum   Watson's, close-flowered, or fruitleaf knotweed
           (Alt: Polygonum confertiflorum, Polygonum kelloggii var. watsonii )
  
Polygonaceae
native                      herbaceous           
Distribution: Conifer Zone
Bloom: Jul - Aug

UW Burke Herbarium Link: Polygonum polygaloides ssp. confertiflorum
USDA Plants Link: Polygonum polygaloides ssp. confertiflorum   (POPOC)