45 



Spiroeo pyromidoto 



Spiroeo betulifo 



Spiraea douglasi 



JRJ 



Figure 6. 



Line drawing of Spiraea x pyramidata and the 

 putative parental types, Spiraea betulifolia 

 and Spiraea douqlasii (from Hitchcock et al . 

 1955-1969) . 



