PkEFACE. 



The papers contained in this volume originally appeared, like their 

 predecessors, in the Journal of the Asiatic Society of Bengal. For the 

 convenience of Botanists I had separate copies of each of these papers 

 printed off as it appeared, and these are now issued as a volume dealing 

 with the CalyciflorcB as its two predecessors dealt respectively with 

 Thalamifiorce and Disciflorce. Each page of the volume bears two 

 numbers. The one at the top of the page is that of the volume of the 

 Journal in which the paper originally appeared. This number is not 

 referred to in the Index, but it is the one which ought to be used by any 

 one quoting this work. The ?iwnbers at the bottofn of the pages (which run 

 continuously ) are those used in the index. 



The dates of the publication of the five papers included in the 

 present volume are as follows : — 



No. 9, pages i to 344, Journ. As, Society^ Bengal^ No. i, 1897. 



No. I, 1898. 

 No. T, 1900. , 

 „ „ No. I, 1901. 

 No. I, 1902 



The order Leguminosce was written by my friend and colleague Dr. 

 D. Train, and the genus Sonerila (N. O. Melastomacece) was done in 

 collaboration with my friend Dr. O. Stapf, of the Kew Herbarium. The 

 rest of the book is my own work. 



It may be useful to repeat that, throughout this work, the length given 

 for a leaf is that of the blade only, the measurements of the petiole (if 

 any) being given separately ; and that the breadth given for a leaf is that 

 of its broadest part. 



