\ 



25 



Table 2 . Number and percent of heads of Cirsium loncristylum 



infested by Rhinocyllus conicus. 



PLOT 

 # 



PLANT 



NUMBER OF HEADS 

 ON PLANT 



NUMBER OF 

 INFESTED HEADS 



PERCENT OF 

 HEADS INFESTED 



1 (Lower Russian Creek) 



4 



30 



8 



23 



13 



11 

 13 

 15 



m 



19 



10 



13 



11 



3 



10 



67% 

 90% 

 80% 

 95% 

 86% 



100% 

 100% 

 100% 

 100% 

 100% 



22% 



0% 



10% 



12% 



43% 



6% 



33% 



78% 



18% 



20% 



45% 

 65% 

 78% 

 30% 

 62% 



Totals 



25 



366 



225 AVERAGE PERCENT 58% 

 OF HEAD 

 INFESTATION 



