FLORA OF WORCESTER COUNTY. 43 



POLYGONACE^. 



RUMEX, L. Dock. 



*crispus, L. Curled Dock. Common. 



*obtusifolius, L. Bitter Dock. Worcester. Prof. Eaton. 



*conglomeratus, Murray. Smaller Green Dock. Moist 

 places. 



*Acetosella, L. Field Sorrel. Common. 



POLYGONUM, Tourn. Knotweed. 



aviculare, L. Common in yards and waste places. 



erectum, L. Waysides, common. 



tenue, Michx. Worcester. Prof. Eaton. 



Pennsylvania m, L. Royalston. " 



amphibium, L. North Worcester. 



Muhlenbergii, Watson. " " 



*orientale, L. Prince's Feather. Escaped. 



*Persicaria, L. Lady's Thumb. G. E. Stone. 



Hydropiper, L. Common Smartweed. Common. 



acre, HBK. Water Smartweed. Wet places. 



Virginianum, L. Thickets. 



arifolium, L. Halberd-leaved Tear-thumb. Low grounds. 



sagittatum, L. Arrow-leaved Tear-thumb. " " 



*Convolvulus, L. Black Bindweed. Worcester. 



Prof. Eaton. 



cilinode, Michx. Low grounds. Quite common. 



dumetorum, L., var. scandens, Gray. Gardner. 



Prof. Eaton. 

 FAGOPYRUM, Tourn. Buckwheat. 



*esculentum, Mcench. Spontaneous. Occasional. 



POLYGONELLA, Michx. Joint-weed. 



articulata, Meisn. Mendon, Gardner. 



