EXECUTIVE SUMMARY 



The southern end of the Elkhorn Mountains was surveyed for sensitive 

 vascular plant species in areas administered by the Bureau of Land 

 Management (BLM) . We did not find species proposed as sensitive by 

 the BLM, although we found large populations of two other noteworthy i 

 plant species. One of the them, flat-topped broomrape (Orobanche 

 corymbosa ) has recently been dropped from the BLM proposed list and 

 state list of plant species of special concern. The second taxon is a 

 subspecies of larkspur that is known only from Montana, limestone 

 larkspur ( Delphinium bicolor ssp. novum) . The study provided 

 documentation of its distribution and status, and basis for changing 

 it from a species which is actively tracked by the state to one which 

 is on the watch list among limited distribution plants of 

 biogeographic interest. 



This survey represents the sensitive species segment of 1994 botany 

 baseline work conducted in the Elkhorn Mountains by Montana Natural 

 Heritage Program for the Headwaters Resource Area and State Office of 

 the Bureau of Land Management. 



