CONTENTS OF VOL. IV. 



The Roman numerals refer to the General Table of Contents, Vol. I. p. xvii. to cUii., where the species 

 and varieties, with all their synonymes, will be found systematically arranged ; the first column of Arabic 

 figures, to the pages of the text in this volume ; and the second, to those of the supplementary matter at 

 the end of it. 



The names of the half-hardy and suffruticose orders and genera are in small type. 



A 2 



