39 



Astragalus terminalis Wats. 



Two new Centennial Valley populations were found of 

 Astragalus terminalis . However, both were found incidental to 

 BLM surveywork and are located on Red Rock Lakes National 

 Wildlife Refuge. Of the two previous records, one was near BLM 

 land and may have extended onto BLM land, but this cannot be 

 confirmed, and watch status is appropriate for the present. 



The new records are from dry valley-bottom ecotonal 

 settings, while the previous records are from subalpine slopes 

 ca. 3000' higher than the valleybottom sites. This elevation 

 amplitude is reflected in the species' habitat description 

 (Hitchcock and Cronquist 1973) . One of the new sites is in an 

 association of Artemisia tridentata / Festuca idahonis with 

 nonnative grass encroachment. The other is at the edge of a 

 stand of Populus tremuloides . While it occupies a range of 

 elevations, it apparently restricted to limestone-derived 

 substrate (Hitchcock and Cronquist 1973) . These are not shown on 

 the Figure 2 map. 



Draba qlobosa Payson 

 (Draba apiculata Hitchc. var. apiculata ) 



Draba qlobosa was collected in the Centennial Mountains for 

 the first time by Lynn Bacon on BLM land. The site is located at 

 9400' near the Continental Divide (Figure 2 map). Detailed 

 information was not collected on its population conditions or 

 subalpine setting. This represents the fourth time it has been 

 collected in Montana. All previous collections were in Madison 

 County. 



Stellaria iamesiana Torrey 



Stellaria iamesiana was collected in Montana for the first 

 time by Denise Culver in two BLM areas. It is mentioned in Dorn 

 (1984) as "expected" in Montana, based on Dorn's familiarity with 

 the species' habitat and distribution in Wyoming. 



The two new records are from side valleys on the south side 

 of the Centennial Valley as shown on the Figure 2 map. Both were 

 found in moist, shaded lower slopes among Populus tremuloides 

 with or without major Psuedotsuga menziesii cover. 



