XU THE FLOWERING PROCESS 



coming up. My wife, Marilyn, was indispensable during this period, 

 since she typed the rewritten manuscript to send to Drs. Galston 

 and Wareing. 



The following secretary-technicians have helped with clerical and 

 experimental aspects of our cocklebur research in Colorado since 

 1955: Pauline Christiansen, Anita Brooks, Joan Maxwell, Annette 

 Hullinger, Marjorie Smith, Katherine Kline, Marilyn Young, and 

 Sandra Howard (who typed one complete version of the manuscript). 

 My colleagues in the Department of Botany and Plant Pathology, 

 especially Dr. Cleon Ross who works on biochemical aspects of 

 cockleburology, have been helpful in many ways. Dr. Ross read and 

 commented on the final manuscript. My graduate students have 

 contributed materially to the original work, some of them (Walter 

 Collins, Leona Harrison, and Carol Pollard) by dissertation work on 

 the physiology of flowering, and all of them (Edward Olsson, 

 Robert Mellor, Merrill Ross, and George Spomer) by ungrudgingly 

 helping with all-night experiments. 



I would especially like to express appreciation to Colorado State 

 University, the National Science Foundation, and the National 

 Institutes of Health for providing facilities and financial support for 

 our cocklebur research and for preparation of this manuscript. 



Frank B. Salisbury. 

 Botanisches Institut 

 Tubingen, West Germany 



Note — Although decimal points throughout this book are 

 given according to American practice (and also the spelling, 

 since the author is a U.S. citizen), on several of the diagrams 

 raised points appear in the decimals. It is hoped that this 

 small inconsistency will not mislead the reader. 



