172 



MEMOIRS OF THE IsTEW YORK BOTANICAL GARDEN 



Acknowledgment 



This is a report of investigations which the writer made in 

 California in 1923 and in Florida in 1925. The studies in Cali- 

 fornia were made mider the auspices of Pomona College and in 

 cooperation with the officers and various members of the Cali- 

 fornia Avocado Association. Those in Florida were conducted 

 under the auspices and with the financial support of The New 

 York Botanical Garden and the Farm Bureau of Dade County, 

 Florida. This cooperation was accomplished chiefly through the 

 keen interest of Mr. T. Ealph Kohinson of the Bureau of Plant 

 Industry, of Air. Win. J. Krome, of Homestead, Florida, in 

 whose orchards most of the studies were made, and of Mr. J. S. 

 Eainey, County Agent of Dade County. During most of the 

 period of study in Florida Mr. E. M. Savage of the Bureau of 

 Plant Industry participated in the investigations as did also 

 Mr. T. Ealph Eobinson for a part of the time. The writer is 

 pleased to acknowledge the assistance and cooperation rendered 

 by all these persons and also by other officers and members of 

 the Florida and the California Avocado associations not here 

 mentioned by name. 



In this report the aim is to present in one paper the most 

 important facts thus far determined regarding flower behavior 

 in avocados, together with more ample illustration by photo- 

 graphs and charts than has hitherto been possible. "WTiile this 

 report includes many new data obtained in Florida for varieties 

 not available in California, there is necessarily some repetition 

 from papers previously published. But for the most part these 

 papers are in publications not readily available in botanical 

 libraries. 



LITERATURE BEARING ON FLOWER BEHAVIOR OP AVOCADOS 



Clark, Orange I., 1923. Avocado pollination and bees. Ann. Eep. Calif. 



Avocado Association, 1922-1923 : 57-62. 

 , 1921. Avocado pollination tests. Ann. Rep. Calif. Avocado 



Association, 1923-1924 : 16-22. 

 Nirody, B. S., 1922. Investigations in avocado breeding. Ann. Rep. 



. Calif. Avocado Association, 1921-1922 : 65-78. 

 Stout, A. B., 1923, a. Avocado studies : pollination and setting of fruit. 



Farm and Tractor Section, Los Angeles Sunday Times, April 



29, 1923. Reprinted in The Florida Grower, Jan. 24, 1925. 



