388 



EXPERIMENT STATION BULLETIN. 



DOGBANE FAMILY. APOCYNACEAE. 



This family of over 1,000 species mostly found in tropical regions contains herbs, shrubs and trees; 

 ours all herbs, usually abounding in^an acrid, milky juice. Botanically nearly allied to the common 

 milk-weeds. 



Fig. 158. 



Indian Hemp. Apocynum cannabinum L. 

 Usually smooth, erect, branching, perennial, 

 20-240 cm. high, coming from vigorous widely 

 extending rootstalks; bark very tough; flowers 

 small, white; leaves narrow, pods in pairs, 

 terete, about 10 cm. long. A native growing 

 on damp, rich soil, on thin soil smaller and 

 less erect. 



Fig. 159. 



Apocynum cannabinum hyper id folium (Ait.) 

 A. Gray. Not so tall, leaves broad at the base, 

 abruptly pointed at the apex. 



