140 



Tall Bearded Iris 



FIG. XXXVIII. MME. CHEREAU 



under Classification, pages 104 and 108). The 

 variety Governor Hughes has an unusually large 

 beard. 



On the falls of nearly every variety of the Iris 

 there are conspicuous veins which extend down the 

 haft (Fig. XXIV, page 133 and Fig.XXXII, page 138). 

 These (sometimes called the " signal" or the " signal 

 patch") it is supposed, by some scientists, serve as 

 guide-lines to indicate to visiting insects the way to 

 the nectar pit at the base of the falls (Fig. XL, page 



