54 



ASTRAGALUS BARRII 

 BARR'S MILK-VETCH 



Element occurrence code: PDFAB0F150 . 016 



Global rank: G3 Forest Service status: SENSITIVE LIST 

 State rank: S3 



Survey site name: STAG ROCK RESERVOIR RIDGES 

 County: Powder River 



USGS quadrangle: FORT HOWES 



Township-range: 006S045E Section: 12 NE4 

 Township-range comments: Sec 1 SE4 



Survey date: 1988-05-18 Elevation: 3420 

 First observation: 1988 Slope/aspect: 



Last observation: 1988-05-18 Size (acres) : 35 



Location: 



CUSTER NATIONAL FOREST, 2.5 MILES NORTH OF FORT HOWES RANGER 

 STATION, 0.5 MILE WEST OF OTTER CREEK ROAD, 0.25 MILE NORTH 

 OF STAG ROCK RESERVOIR. 



Element occurrence data: 



CA. 950 PLANTS IN 3 SUBPOPULATIONS ; ABOUT 75 PERCENT OF POP- 

 ULATION IN FLOWER. 



General site description: 



ERODING BARREN KNOLLS AND RIDGES IN SILTY-CLAY SOIL, WITH 

 PHLOX HOODII, FESTUCA IDAHOENSIS, HAPLOPAPPUS AMERIOIDES, 

 AND GUTIERREZIA SAROTHRAE. 



Land owner/manager: 



CUSTER NATIONAL FOREST, ASHLAND RANO^R DISTRICT 



Information source: 



SCHASSBERGER, L.A. 1988. FIELD SURVEY, CUSTER NATIONAL FOREST, 

 13-20 MAY. 



Element Occurrence Record - Astragalus barri 

 Montana Natural Heritage Program 



