15 



RESULTS: Plot data for the three sites are summarized 

 in Table 1., pp. 16. Density of C. lonqistylum plants 

 varied from 0.24 plants/m 2 at Russian Creek to 2 . 1 

 plants/m 2 at Neihart. The percentage of flowering 

 plants was highest at Russian Creek (35%) , and was 

 lower at Kings Hill and Neihart (28% and 17%, 

 respectively) . However, the reverse trend was observed 

 for plants at the rosette stage, with a greater 

 percentage of rosettes occurring at Neihart (83%) and 

 reduced percentages observed at Kings Hill and Russian 

 Creek (71% and 64%, respectively) . The highest number 

 of large and medium rosettes were observed at Neihart. 



Cirsium lonqistylum plants produced 10 to 16 heads per 

 plant. 



