FLORA OF WORCESTER COUNTY. 45 



*Esula, L. Rare. Miss K. I. Fish. 



*Cyparissias, L. Escaped. Common. 



AcALYPHA, L. Three-seeded Mercury. 



Virginica, L. Fields and open places. 



URTICACE^. 



Ulmus, L. Elm. 



fulva, Michx. Slippery Elm. Rare. 



Americana, L. American Elm. Common. 



Celtis, Tourn. Nettle-tree. 



occidentalis, L, Hackberry. Rare. 



Cannabis, Tourn. Hemp, 



*sativa, L. East Worcester. 



HuMULUS, L. Hop. 



Lupulus, L. Common Hop. Low grounds. 



MoRUS, Tourn. Mulberry. 



*alba, L. White Mulberry. Spontaneous. 



Urtica, Tourn. Nettle. 



gracilis, Ait. Waste places, common. 



*dioica, L. Waste places. Rather rare. 



Laportea, Gaudichaud. Wood-Nettle. 



Canadensis, Gaudichaud. Rich soil. Rather rare. 



PiLEA, Lindl. Richvveed. 



pumila. Gray. Moist places, common. 



BcEHMERiA, Jacq. False Nettle. 



cylindrica, Willd. Rich soil. Quite common. 



PLATANACE^. 



Platanus, L. Buttonwood. 



occidentalis, L. Common. 



