RUTACEAE 419 



Tertiary, common on Beacon Hill and near the sea: Cretaceous, 

 doubtfully, in northern Monmouth Co.: Older Formations, rare. 

 168-220 days. About sea level. 



5. C. sulcatum (Riddell) Small (L. sulcatum Riddell). In dry 

 soil: Ont. to Man., Ga. and Tex. 

 Conn. Rare in New Haven, Hartford and Litchfield countiis, 



increasing northwestward. 

 N. Y. Occasional in the Bronx; reported but not definitely known 



from near the Highlands of the Hudson; otherwise unknown. 

 N. J. Known only from a very old specimen collected in Bergen 



Co., and from Sussex Co. 

 Pa. Lackawanna Co. 



ZYGOPHYLLACEAE 



Tnhulus lerrcslris L. and Zygophyllum Fabago L. have both been collected near 

 the metropolis. They are very doubtfully established. 



RUTACEAE 



Pistils 2-5, distinct; fruit fleshy, capsular. 1. Zanthoxylcm. 



Pistil I, 2-celled; lruit a samara. 2. Ptelea. 



i. Zanthoxylum L. 

 1. Z. americanum Mill. In woods: Que. and Ont. to Minn., Ga., 

 Ala. and Oklahoma. 

 Conn. Rare in the south and probably mostly as an escape from 



cultivation, increasing northwestward into Litchfield Co. as a 



wild plant. 

 N. Y. Westchester Co., increasing northward. (L. I. records 



probably based on cultivated specimens.) 

 N. J. Bergen and Hunterdon Co., rare, increasing northward and 



becoming common in Sussex Co. (Monmouth Co. record probably 



based on cultivated specimens). 

 Pa. Lackawanna, Northampton, Bucks and Berks counties. 



Tertiary, o: Cretaceous, 0: Older Formations, increasing north- 

 ward. 117-166 days. Sea level-4,000 ft. 



2. Ptelea L. 

 1. P. trifoliata L. In woods: Conn, to Minn., south to Fla. and 

 northern Mex. 



Conn. Not uncommon as an escape from cultivation, unknown as 

 a plant wild from the state. 



