16 

 GEOGRAPHICAL DISTRIBUTION 



1. RANGE: In Montana, M. primuloides is limited to 

 the southwest portion of the state, with one 

 location in Ravalli County and seven current and 

 one historical locations in Beaverhead County. 

 All of the sites are within an approximately 35 

 mile radius. The Montana populations are at the 

 north-east limit of the range of the species. The 

 main range extends west to Washington and 

 California, and south to Arizona and New Mexico 

 (Hitchcock et al. 1955-1969) . 



2. CURRENT SITES: Mimulus primuloides is recently 

 documented from seven locations, six in Beaverhead 

 County and one in Ravalli County. Three new 

 populations were located in 1990: Odell Creek 

 (007) , Rock Island Lakes (008) , and Skull Creek 

 (009) . 



Lost Trail Bog (004) is included here as recently 

 documented (1985) even though the population was 

 not located in either 1989 or 1990. 



The eight locations (seven current and one 

 unverified) for M. primuloides are shown in Figure 

 2, p. 17. The legal description, latitude and 

 longitude, elevation, USGS topographic map name, 

 and location of the occurrences in Montana are 

 found in the Element Occurrence records for these 

 populations, pp. 26-34. Also, the exact locations 

 are indicated on U.S.G.S. topographic maps 

 provided in pp. 35-39. 



3. UNVERIFIED LOCATIONS: The Odell Lake (005) 

 population has not been relocated since 1946. 

 This site was briefly surveyed in 1990. The area 

 is grazed, and it is possible that the population 

 is no longer extant. 



4. HISTORICAL SITES: A specimen deposited at Rocky 

 Mountain Herbarium (RM) , University of Wyoming, 

 Sparrow (USFS81590) . documents the ninth record 

 for this species. The population at "Twin Lakes" 

 (001) was located in 1937. Unfortunately, label 

 data are vague, and several Twin Lakes exist on 

 the Beaverhead National Forest. Surveys of the 

 two possible sites, one in the Pioneer Mountains 

 near Torrey Peak, and another in the Beaverhead 

 Mountains south and west of Wisdom, Montana, will 

 need to be completed to verify the exact location 

 of the population. The site in the Beaverhead 



