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JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



branches ; secondary branching, however, does not occur to any marked 

 extent. The result of this torsion is that the entire plant conies to lie 

 in one plane. This characteristic is well shown in fig. 11. 



In the second principal type (fig. 13) the tendency towards a \ 

 arrangement of the leaves, which is seen to be so marked a feature in 

 the first type, is absent, and the primary branches arise on all sides of 

 the main stem. Secondary branching also occurs to a much greater 

 extent than in the previous type, giving to the plant as a whole a robust 

 and bushy appearance. When fully grown the plant is at least four and 



Fig. 7. — Dera Gazi Khan Plant. 



may reach six feet in height ; nor does it begin to flower till the middle 

 of July, and is only in full flower in early August. 



Of the two additional types the first (fig. 6) bears the closest resem- 

 blance to the first of the types already mentioned, and stands apart from 

 this only in the degree in which the above-mentioned characteristics are 

 emphasised. The apparent distichous arrangement of leaves and branches 

 is perhaps hardly capable of further emphasis. In height, however, the 

 plant is not more than eighteen inches, and by early July ripe seed occurs 

 in abundance. By the end of that month the crop shows marked indica- 

 tions of dying off. 



The second additional type (fig. 12) forms a connecting link between 

 the two main types. The plant is stunted, being barely three feet in 



