168 GEOLOGICAL SURVEY OF NEW JERSEY. 



SYRINGA, L. 



Lilac. 

 S. VULGARIS, L. 



Sussex : Escaped from cultivation, and well established along 

 the railroad at Andover Britton ; and occasional elsewhere in 

 the State. Adventive from Persia. 



APOCYNACE.E. 



VINCA, L. 

 Periwinkle. 

 V. MINOR, L. 



In waste places and copses. Commonly escaped from cultiva- 

 tion. Naturalized from Europe. 



APOCYNUM, L. 



Dogbane. Indian Hemp. 



A. androssemifolium, L. 



Fields and borders of thickets. Ocean and Mon mouth : Not 

 rare Knieskern. Gloucester : Quite common about Mickleton 

 B. Heritage ; and frequent or common in the middle counties. 



A. cannabinum, L. 



Warren : In a swamp on Jenny Jump Mountain near Green's 

 Pond Britton. Probably occurs elsewhere in the State, but the 

 typical form is certainly rare. 



Var. pubescens (R. Br.), DC. 



Low grounds and borders of streams. Common throughout 

 the State. 



Var. hypericifolium (Ait.), Gray. 



Salem : Banks of the Delaware River Commons. 



Var. glaberrimum, DC. 



Sussex : Shores of Lake Hopatcong Britton ; and very com- 

 mon on gravelly shores throughout the valley of the Delaware 

 River. 



