3<5 



APOCYNACE^E 



Synopsis of Drugs from the Apocynacea 



A. Roots. 



*Apocynum, 446. 



Apocynum Androsasmifolium, 446 a. 



B. Barks. 



Aspidosperma, 447. 

 Alstonia Constricta, 448. 

 Alstonia Scholaris, 449. 

 Conessi, 450. 



C. Seeds. 



STROPHANTHUS, 451. 



D. Leaves. 



Oleander, 452. 



E. Herb. 



Urechites, 453. 



446. APOCYNUM. APOCYNUM, N.F. 

 CANADIAN HEMP 



The dried rhizome of Apocy'num canna'binum Linne" without the presence of 

 more than 5 per cent, of stems and foreign matter. 



BOTANICAL CHARACTERISTICS. Stems much branched, 2 to 3 feet high. Leaves 

 from oval to oblong or lanceolate, short petiolate or sessile. Inflorescence 

 cymose; corolla greenish- white, with nearly erect lobes, the tube not longer 

 than the calyx tube. 



O 



FlG. 208. Apocynum cannabinum Cross-section. (28 diam.) A, Cork. B, Parenchyma 

 of cortex. C, Medullary ray. D, Water tube. (Photomicrograph.) 



HABITAT. United States. 



DESCRIPTION OF DRUG. A long, cylindrical root, somewhat contorted, about 

 8 mm. (J| in.) thick, with a rather thick light brown bark, longitudinally 

 wrinkled and transversely fissured, and a yellowish, porous wood divided by 

 fine medullary rays into very narrow wood- wedges; fracture short. The 

 thick inner cortical layer has numerous lactiferous vessels scattered through 

 it, which in the fresh state secrete a milky juice which hardens into a caout- 

 chouc-like substance. Odor slight, or none: taste bitter, nauseous. 



