VI INTRODUCTION. 



officials of the Government of Formosa, to whom I am much indebted for 

 help in the collection of material and in the publication of work. Finally, 

 I must with deep sorrow express my gratitude to the late T. KAWAKAMI, 

 who was so long my collaborator in the Botanical Survey of Formosa and 

 whose brilliant and devoted life came to its close while this volume was in 

 course of publication. 



B. HAYATA. 

 August 1915, Taihoku and Tokyo. 



