Acknowledgments 



We acknowledge our sincere appreciation to Theodore R. 

 Dudley, research botanist, Frank S. Santamour, Jr., research 

 geneticist, and other U.S. National Arboretum staff members whose 

 informative input, critique, and encouragement aided in solving 

 many of the problems that developed during the preparation of this 

 publication. 



We also thank the following persons for assisting us in locating 

 many of the extremely rare references that were vitally needed to 

 complete this monograph: Thaddeus Ohta, reference librarian, 

 Japanese Section, Asian Division, U.S. Library of Congress, 

 Washington, D.C.; William J. Dress, professor emeritus, and Peter 

 A. Hyypio, curator, both with the Bailey Hortorium, Cornell 

 University, Ithaca, N.Y.; and Stephen A. Spongberg, horticultural 

 taxonomist, The Arnold Arboretum, Cambridge, Mass. 



In addition, we are greatly indebted to Andrea DuBois 

 Scarborough of the U.S. National Arboretum for providing critical 

 comments and assistance during the preparation of this publication. 



Finally, we pay tribute to all past botanists and nonbotanists 

 whose knowledge of Japanese flowering cherries became the basis 

 of our research. 



