AMYGDALA CEAE 393 



N. J. Sussex, Warren and Hunterdon counties along the Dela- 

 ware, increasing northward. 

 Pa. Pike, Northampton and Bucks Co. 



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

 ward. 1 1 7-1 89 days. Sea Ievel-4,020 ft. 



7. P. cuneata Raf. In wet soil or among rocks: N. H. to Minn., 



N. Car. and Wise. 



Conn. Rare near the coast, increasing northwestward. 



N. Y. From the Highlands of the Hudson northward, not common. 



N. J. Sussex, Morris, Passaic and Warren counties. 



Pa. Monroe, Northampton and Chester counties. 



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

 ward especially on limestone. 127-220 days. Sea level-2,100 ft. 



8. P. Cerasus L. In woods, escaped from cultivation: X. H. 



and Mass. to N. Y. and Pa. Native of Europe and Asia. 

 Common as an established escape in our area. 



q. P. Avium L. In thickets and woodlands, escaped from cultiva- 

 tion: Ont. to Mass. and Va. Native of Europe and Asia. 

 Occasional as an established escape in most parts of our range. 



10. P. pennsylvanica L. f. In rocky woods: Newf. to Ga., west 

 to the Rockies. 

 Conn. Throughout the state, more common northward than 



elsewhere. 

 N. Y. At Hewlett and north of the moraine on L. I.; rare on S. 



I., thence increasing up the Hudson Valley and becoming very 



common northward. 

 N. J. Throughout the region north of the coastal plain. 

 Pa. Throughout the range, except in Chester and Delaware 



counties. 



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

 ward. 117-189 days. Sea level-4,020 ft. 



1 1. P. Mahaleb L. Roadsides and waste places: Conn, to Ont., 

 N. J., E. Pa. and Kansas. Native of Europe. 

 Occasional as an escape from cultivation. 



The following are sometimes to be found as adventives: Primus institii L., P. 

 domestica L. and P. nigra Ait. None are common. 



The peach Amygdalus persica L., is an escape in many parts of our range. 



