LIST OF ILLUSTRATIONS 



A STUDY or SPANISH IRISES (from a -drawing by Ethel 



Roskruge) . . . . Frontispiece 



* IRIS LUTESCENS (to shoiv the parts offloiuer} . . to face page 2 

 GROUP OF SPANISH IRISES . , . . . ,, 4 



* ZINC LABELS AND APPARATUS FOR MARKING . . } , 10 

 IRIS ORIENTAL1S . . . . , . ,, 12 



OCHAUREA . . . . . " . ,, 42 



KOROLKOWI x ONCOCYLUS . . . .. 44 



PLICATA " MADAME CHEREAU " . . ,, 46 



* UNGUICULARIS ALBA (jwith abnormal standards} . ,, 62 



* LONGIPETALA MONTANA . . . ,. ,, 74 



PSEUDACORUS (ENGLISH FLAG) , . . . ,, 76 



* VERNA . . y . ... ,, 88 



* CH1NENSIS . ? . s* . . . ,, 90 



* MILESU . . . . . . ,, 94 



PARADOXA ' .. * . . . . ,, 104 



URMIENSIS . - . ^ . . . ,. 106 



IBERICA . . . * v . ,, IO8 



BARNUMAE - *>- ^. . , . * ,, no 



f IRIS GATESII * . ** v ., . ,..' ,, 112 



* From photographs by E. Allard. 



t From blocks kindly lent by Mr C. G. van Tubergen, Junr., of Haarlem. 



xi 



