^Aarch 1, 19 96 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



'Scientific Name: ASTRAGALUS BARRII 

 :ommon Name: EARR'S MILKVETCH 



Global rank: G3 Forest Service status: SENSITIVE 



State rank: S3 Federal Status: 3C 



Element occurrence code: PDFAB0F150 . 016 ID: Y 



Slement occurrence type: 



Survey site name: STAG ROCK RESERVOIR RIDGES 



EO rank: B 

 lO rank comments: TOO CLOSE TO RESERVOIR FOR CATTLE. 



:ounty: POWDER RIVER 



JSGS quadrangle: FORT HOWES 



Township: Range: Section: TRS comments: 

 D06S 045E 12 NE4; 1 SE4 



Precision: S 



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 



I RESERVOIR. 



Element occurrence data: 



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

 FLOWER. 



laneral site description: 



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

 HOODII, FESTUCA IDAHOENSIS, HAPLOPAPPUS ARMERIOIDES, AND GUTIERREZIA 

 SAROTHRAE. 



Land owner/manager: 



CUSTER NATIONAL FOREST, ASHLAND RANGER DISTRICT 



Comments : 



SEE GMF FOR BASE MAP SHOWING SUBPOPULATIONS. 



Information source: SCHASSBERGER, L. S. 1988. [FIELD SURVEYS IN POWDER 

 I RIVER AND ROSEBUD COS. OF 12-21 MAY (ASTRAGALUS 



BARRI I ) . ] 



Specimens: SCHASSBERGER, L. A. (187, 188, 189). 1988. MONTU. 



