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RUTACEA. 
(RUE FaMILy.) 
Xanthoxylum Americanum, Mill. 
Georgetown, introduced (Mrs. Horner); Boxford; Summer St. 
Cemetery, Salem; Topsfield; Danvers. Probably not a native of 
the county, but introduced from the north or west. 
Ailanthus glandulosus, Desf. (TREE oF HEAVEN; CHINESE SU- 
MACH. ) 
Often cultivated as an ornamental tree and freely produced from 
seeds. (Adv. from China.) 
ANACARDIACEAE. 
(CASHEW FaMILy. ) 
Rhus typhina, Z. (STaGHorn SUMACH.) 
Common in rocky places and roadsides. 
Rhus glabra, LZ. (SmooTH SuMACH.) 
Common. Particularly from Wenham to Topsfield and Beverly. 
Rhus copallina, Z. (Dwarr SuMACH.) 
Frequent with the last. 
Rhus venenata, DC. (Poison SUMACH.) 
Common in low ground and swamps. 
Rhus Toxicodendron, LZ. (Porson Ivy.) 
Very common, both the low running, and the taller shrubby forms; 
the latter being most abundant near the sea. 
VITACEZE. 
(VINE FamILy.) 
Vitis Labrusca, Z. (NorTHERN Fox GRAPE.) 
Common throughout the county. A variety with paler foliage and 
almost white fruit is found in Danvers by J. H. Sears. 
Vitis sestivalis, Michx. (SUMMER GRAPE.) 
Lynn (Tracy); Oakes Ledge, Danvers (Dr. Chas. Pickering); Cape 
Ann. Not so abundant as the last. 
Vitis cordifolia, Michx. (Frost GRraPt.) 
Essex, West Gloucester, Boxford, Methuen; Andover (Mrs. Downs), 
etc. Rather frequent. 
Vitis heterophylla, Thunb. (Cissus SrrsoLpi of the gardens.) 
Found escaped at Nahant, 1878, by Miss Mary T. Saunders. 

