13 



recorded populations of Cirsium lonqistylum in 

 Judith Basin, Cascade, and Meagher counties. 

 All are in the Little Belt Mountains except 

 one, which occurs in the Big Belt Mountains to 

 the west. 



General demographic details (Montana) : 



a. site (001) 



1. Area occupied by population: 

 Unknown . 



2. Estimated number of individuals: 

 Unknown. 



3. Density: Unknown. 



4. Presence of dispersed seeds: 

 Unknown . 



5. Evidence of reproduction: Unknown. 



6. Evidence of population expansion or 

 decline: Unknown. 



b. site (002) 



1. Area occupied by population: ca. 500 



acres. 



2. Estimated number of individuals: 

 Tens of thousands of individuals 



3. Density: Up to 1.7 plants/m^. 



4. Presence of dispersed seeds: 

 Unknown. 



5. Evidence of reproduction: Many young 

 rosette-stage plants were observed. 



6. Evidence of population expansion or 

 decline: Unknown. 



c. site (003) 



1. Area occupied by population: 

 Unknown. 



2. Estimated number of individuals: 

 Unknown. 



3. Density: Unknown. 



4. Presence of dispersed seeds: 

 Unknown . 



5. Evidence of reproduction: Unknown. 



6. Evidence of population expansion or 

 decline: Unknown. 



d. site (004) 



1. Area occupied by population: ca. 1 

 acre. 



2. Estimated number of individuals: 



Unknown. 



3. Density: Unknown. 



