42 



BUTACBiB. 



(EuE Family.) 



Xanthoxylum Americarmm, Mill. 

 Georgetown, introduced (Mrs. Horner); Boxford; Summer St. 

 Cemetery, Salem; Topsfield; Danvers. Probably not a native of 

 the county, but introduced ftom the north or west. 



Ailanthus glandnlosus, Desf. (Tkkb op Hbavbn; Chinese Su- 

 mach.) 



Often cultivated as an ornamental tree and freely produced from 

 seeds. (Adv. ftom China.) 



A]!]'ACABDIACEiE:. 



(Cashew Family.) 



Bhus typhina, L. (Staghokn Sumach.) 



Common in rocky places and roadsides. 

 Rhus glabra, L. (Smooth Sumach.) 



Common. Particularly from Wenham to Topsfield and Beverly. 

 Rhus copallina, L. (DwakfSumach.) 



Frequent with the last. 

 Rhus venenata, DC. (Poison Sumach.) 



Common in low ground and swamps. 

 Rhua Toxicodendron, L. (Poison Ivy.) 



Very common, both the low running, and the taller shrubby forms ; 



the latter being most abundant near the sea. 



VITACE.a!. 

 (Vine Family.) 



Vitis Labrusca, L. (Northern Fox Grape.) 



Common throughout the county. A variety with paler foliage and 



almost white ftuit is found in Danvers by J. H. Sears. 

 Vitis sestivalis, Mchx. (Summer Grape.) 



Lynn (Tracy) ; Oakes Ledge, Danvers (Dr. Chas. Pickering) ; Cape 



Ann, Not so abundant as the last. 

 Vitis cordifolia, Michx. (Frost Grape.) 



Essex, "West Gloucester, Boxford, Methuen ; Andover (Mrs. Downs), 



etc. Bather frequent. 

 Vitis heterophylla, Thunb. (Cissus Sieboldii of the gardens.) 



Found escaped at Nahant, 1878, by Miss Mary T. Saunders. 



