f 





Plate III. — The pollen of Iris geriiianica is poor and apparently almost 

 worthless. Many of the g-rains are small and shrivelled. There was no 

 g-ermination in tests made on five different dates. Such pollen will rarely 

 or perhaps never function in the production of viable seed even when used 

 on varieties that are inherently highly fruitful. 



Iris germanica is, however, somewhat fruitful. In the tests' (see record 

 in table II) some capsules "with viable seed were obtained. 



