184 STUDIES IN INDIAN FIBRE PI;ANTS. 



under-sui'face of the cotyledonary leaves of the local variety is red- 

 dish and this reddening is also to be seen on the stems. Further, 

 both the imder-surface of these leaves and the stems are hairy. 

 In the case of the Jubbulpore variety the under-surface of the first 

 leaves and the stems are quite green and glabrous. Seven weeks 

 after sowing, the local plants measured on the average 114 cms. in 

 height, while the Jubbulpore plants were 157 cms. on the average. 

 After the seedling distin ^,ions, it is in the branching of the two 

 varieties that the greatest differences are to be seen. The local 

 variety generally branches about four feet above the ground ; the 

 branches are long and spreading with secondary and often ter- 

 tiary arms, the whole forming a dense canopy. The Jubbulpore 

 variety branches about eight feet from the ground, throwing off 

 a few erect parallel shoots with little or no secondary branching 

 and no canopy is formed. The local variety is late and yields 

 abundance of flowers and seed, while the Jubbulpore variety flowers 

 much earlier and forms but few seeds. 



The above di:fferences are summed up in the following table : — 



Local variety. 



•Jubbulpore variety. 



1, Seed. Small, shiny, black. 



2. SraJli/if/x. Gerniiiiation slow, seedlings 



small with reddish downy cotyledonary 



Large, dull black or greyish. 



Germination rapid. Seedlings large with 

 green glabrous cotyledonary leaves and 



leaves and stems. I stems. 



riant.s. Short, late maturing with many- i Tall, early maturing with a few short sparse- 

 flowered spreading branches beginning j ly flowered parallel branches beginning 

 at a point about four feet from the at a point about eight feet from the 



ground. ground. 



The general habit differences at flowering time can be seen in 

 Plate I. The rows on the right are pure line cultures of Jubbul- 

 pore hemp. Those on the left are similar cultures of the local 

 variety. In Plate II the same varieties are again shown, but in 

 this case the local variety is on the right. The much shorter growth 

 of both varieties is due in this case to late sowing. In all cases 

 but poor development is obtained with *Sa/^'/^-hemp when sowing is 

 deferred till the middle of the monsoon. To obtain the best results 



