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digitate, with five to eleven linear-lanceolate, pointed and 

 serrate leaflets. Hemp is dioecious. The slaminate in- 

 florescences (Fig. 108, A) 

 are in axillary, narrow and 

 loose panicles, the pistillate 

 in erect, leafy spikes, also 

 axillary. The slaminate 

 flower. is borne on a slender 

 pedicel subtended by a 

 bracteole; it has five dis- 

 tinct sepals and five short 

 stamens. Each pistillate 

 flower (Fig. 108, B) is sub- 

 tended by a leafy bract, 

 and possesses a single, 

 thin, entire calyx segment, 

 wrapped about the ovary. 

 The ovary has two thread- 

 like feathery stigmas. 

 Hemp is wind-pollinated. 

 The ovary matures into 

 an ovoid, hard achene. 

 The curved embryo is 

 imbedded in a fleshy endo- 

 sperm. The fruits of 

 hemp are much larger 

 and heavier when grown 

 in a moist habitat than 

 when grown in a dry 

 one. 



Geographical. — The native home of common hemp is central and western 

 Asia. It has spread, as a result of cultivation, throughout Europe, Asia and 

 America. In many places, it has escaped from cultivation and become a 

 rather troublesome weed. 



Fig. ioS. — Hemp (Cannabis sativa). 

 A, branch of staminate plant; B, single 

 pistillate flower. (B after Wossidlo.) 



