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STATE DOCUMENTS COLLECTION 

 SEP C 2 1992 



MONTANA STATE LIBRARY 



1515 E. 6th AVE. 

 HELENA, MONTANA 59620 



THE EFFECT OF THE INTRODUCED WEED, 



CENTAUREA MACULOSA ON ARABIS FECUNDA . 



A THREATENED MONTANA ENDEMIC 



Prepared for: 



The Montana Natural Heritage Program 



State Library 



1515 East Sixth Avenue 



Helena, Montana 59620 



Prepared by: 



Peter Lesica 



P.O. Box 8944 



Missoula, Montana 59807 



and 



J. Stephen Shelly 



Montana Natural Heritage Program 



State Library 



1515 East Sixth Avenue 



Helena, Montana 59620 



January, 1991 



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