Fig. 1. The inflorescence of the avocado. The flowers are borne on the 

 basal branches of the newly expanding annual growth increment of the 

 shoot, the terminal portion of which bears the young leaves of the season. 

 February 12, 1929. 



is then about 48 hours. The third group (B 3 ) is made up of trees 

 that bear some flowers which exhibit the behavior of each of the 

 preceding groups. That is, after the termination of their first 

 period of anthesis, some will remain closed a single night and open 

 the following morning, while others on the same tree will remain 



