MORACE.K 



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(ligilatf, with Uw to eleven linear-laiueolate, i>()inte<l and 

 serrate leallets. Hemp is diceeious. The slam'nuilr iii- 

 Jlofcscciiccs (Fi,^. 1 08, A) 

 are in axilhir}-, narrow and 

 loose panicles, the pisliUalr 

 in erect, leafy spikes, also 

 axillary. The stam'nialc 

 flower is borne on a slender 

 l)editel subtended by a 

 bracteole; it has five dis- 

 tinct sepals and five short 

 stamens. Each pistillalr 

 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, hardachene. 

 The curved embryo is 

 imbedded in a tlesh\' endo- 

 sperm. 'i'he fruits of 

 hem J) an- much larger 

 and hea\ier when grown 

 in a moist habitat than 

 when grown in a dry 

 one. 



hilc t\< 



Geographical.— Tlu- niitixc lionu' of common lu mp is ci-ntral arui western 

 Asia. It lias spread, as a result of lullivalion, throuRliout liurope, .\sia and 

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

 rather troublesome weed. 



