636 BOTANY AND PHARMACOGNOSY. 



cent, ovary oblong, about i mm. long, with a single campylo- 

 tropous ovule. Odor distinct. Taste slightly acrid. 



Constituents. — From 15 to 20 per cent, of a resin (called 

 cannabin), consisting of a number of substances, one of which, 



Fig. 273. Branch of a pistillate plant of Cannabis sativa showing the petiolate, 

 S- to 7-digitately divided leaves and the axillary spikes of pistillate flowers with leaf-like 

 bracts. 



CANNABiNOL (caunabindon) occurs as a red, oily substance and 

 is said to possess the intoxicating properties of the drug. The 

 drug also contains 0.3 per cent, of a yellowish volatile oil, which 

 consists chiefly of a sesquiterpene, cannibene and a stearoptene. 

 A similar sesquiterpene is present in the staftiinate plant of Canna- 



