THE GENUS IRIS— Continued 



Extract from the Preface 



In publishing this book on Irises, I am fully aware that it 

 is not yet possible to give a complete account of the Iris 

 genus. This could only be done by one who had the leisure 

 and the opportunity first of all to go to all the localities in 

 which Irises have been found or in which new species are 

 likely to exist, and then to grow all the species side by side 

 and note their affinities and differences. Meanwhile, this book 

 contains an attempt to put together the available facts and to 

 indicate the gaps in our information. It is hoped that it may 

 lead to the filling up of some of these gaps and to a more 

 general appreciation of the various species of Iris. With 

 regard to the arrangement of the species in groups, it seemed 

 better to take together those plants which are obviously 

 related to one another by their whole appearance, than to 

 pick out some one character or set of characters and base on 

 it an artificial grouping, which would bring together the most 

 widely different species. This plan has made it impossible to 

 give a really satisfactory clavis or key to the Apogon section, 

 but it is hoped that the definitions of the characteristics of the 

 various groups will be a sufficient guide in assigning an Iris 

 to one or other of them. 



CONTENTS 



Introduction. The Literature of the The Pogoniris Section 



Iris. BibUography The Nepalensis Section 

 The structure, distribution and culti- The Juno Section 



vation of the Iris The Xiphiura Section 



Iris diseases and their remedies The Reticulata Section 

 Analytical key to the subdivisions of The Gynandriris Section 



the genus Iris Hybrids 



The Apogon Section Raising Irises from seed 



The Pardanthopsis Section Orris root 



The Evansia Section Unidentified specific names 



The Oncocyclus Section List of plants wrongly described as 



The Regelia Section Irises. Index 

 The Pseudoregelia Section 



\_A special prospectus of this book, together with a specimen 

 coloured plate, 7uill be forwarded on applicatio>i\ 



