Oval Leaf Knotweed 
Pale Smartweed 
Parsnipflower buckwheat 
Pennsylvania smartweed 
Persicaria lanigera 
Pink-headed Persicaria 
Polygonum bistortoides 
Polygonum cedrorum 
Polygonum palaestinum 
Polygonum setosum 
Pteropyrum scoparium 
Red Dock 
Red Sorrel 
Rock buckwheat 
Rumex aeroplaniformis 
Rumex cyprius 
Rumex nepalensis 
Rumex pictus 
Sea Grape 
Shasta buckwheat 
Slender Knotweed 
Snow Buckwheat 
Sorrel 
Spotted lady's thumb