Preface. 
included in this volume was written, I have re-established Maingay's 
manuscript genus Grijjithia ; and to it I have referred, as proposed by 
him, the plant here named Polyalthia magnoli&flora t H. f. and Th. 
It may also bo useful to mention that, in the following pages, tho 
length given for a leaf is that of the blade only, the measurement of 
the petiole being given separately ; and that tho breadth given for a 
leaf is thnt of its broadest part. 
Royal Botanic Garden, Calcutta, 
September, 1893. 
