168 GEOLOGICAL SURVEY OF NEW JERSEY. 
SYRINGA, L. 
Lilac. 
S. vutearis, L. 
Sussex: Escaped from cultivation, and well established along 
the railroad at Andover—Britton ; and occasional elsewhere in 
the State. Adventive from Persia. 
APOCYNACES. 
VINCA, L. 
Periwinkle. 
V. minor, L. 
In waste places and copses. Commonly escaped from cultiva- 
tion. Naturalized from Europe. 
APOCYNUM, L. 
Dogbane. Indiah Hemp. 
A. androsemifolium, L. 
Fields and borders of thickets. Ocean and Monmouth: 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. 
