— 147 - 



in the latter. Spontaneous self-fertilization is also excluded as 

 long as the flower is open. The hive-bee proceeds in the same 

 way in both species. 



The species, we have studied under the name of Commelyna 

 comm.unisy'i) has white flowers;the pollen of the six antliers 

 is bright-yellow and the connectives of m* are pale yellow The 

 top of the styie is curved inwards, and some pollen may fall 

 upon the stigma (flg. 6). Except for this peculiarity, the structure 

 is the same as G. tuberosa; we haveseen no visitors. 



At Ghent, all species of Commelyna are fertile. 



