TENDKILS IN SOME CUCUKBITACEAE. 257 



The basal part of the tendril is radial in section and has a ring 

 (as seen in t. s.) of six to nine bundles which anastomose at different 

 levels. 



The arms of the tendrils are similar in structure to those of 

 Benincasa cerifera. 



The vascular connections of the tendril and the leaf with the stem 

 are also similar. 



ClTRULLUS VULGARIS. 



The arrangement of organs at the node is similar to that in Ben- 

 incasa, except that the flower is here replaced by an inflorescence- 

 The tendril is two-armed. 



The stem and leaf-stalk do not present any great differences from 

 the first type. 



The basal part of the tendril is radial with nine to twelve or 

 thirteen bundles which are so arranged that large and small bundles 

 alternate. The branches of the tendrils show the same structure as 

 in the first type except that the bundles are seveD at the base 

 diminishing to five near the apex. 



Trichosanthes anguina. 



The relationships of the organs at the node are the same as in 

 Beni?icasa cerfera but the tendrils are four-armed. 



The structure of the stem and the petiole is in general similar to 

 that of the first type. 



The basal part of the tendril in transverse section is slightly six- 

 lobed and has six bundles in one ring. There is no trace of a ventral 

 groove so that the structure is radial. The tendril-arms have a 

 distinct groove and the bundles are arranged on the type of the 

 petiole. 



The vascular bundles of the tendril unite with the bundles of the 

 inner ring of the stem, while the leaf-traces are connected with the 

 outer bundles as described before. 



Each tendril-arm receives three branches from three bundles of 

 the tendril situated on the side on which the arm is given off. 



In one case it was found that a ripe elongated fruit was apparently 

 arising immediately below the branching point of a tendril. On cutting 

 sections of the lower part of the tendril it was found that it was 

 merely a case of fusion of the flower-pedicel with the basal part of the 

 tendril. Goebel mentions a simlar case. 



Trichosanthes dioica. 

 The arrangement of the organs at the node is the same as in the 

 last species but the tendrils are simple. 



