March 1, 1996 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: ASTRAGALUS BARRII 

 Common Name: BARR'S MILKVETCH 



Global rank: G3 Forest Service status: SENSITIVE 



State rank: S3 Federal Status: 30 



Element occurrence code: PDFAB0F150 . Oil ID: Y 



Element occurrence type: 



Survey site name: FORT HOWES RIDGE 



EO rank: A 

 EO rank comments: GOOD POPULATION SIZE, PROTECTED 



County: POWDER RIVER 



USGS quadrangle: FORT HOWES 



Township: Range: Section: TRS comments: 

 006S 045E 24 NE4 



Precision: S 



Survey date: 1988-05-14 Elevation: 3550 - 



First observation: 1988-05-14 Slope/aspect: 



Last observation: 1995-06-14 Size (acres) : 4 



Location: 



CUSTER NATIONAL FOREST, ON HILLS AND CLIFF 0.25 MILES NW OF FORT HOWES 

 RANGER STATION. 



Element occurrence data: 



1995: 50 PLANTS, 90% IN FLOWER. 1988: CA. 600 PLANTS, IN 2 

 SUBPOPULATIONS; MOST IN FLOWER. 



General site description: 



ERODING HILLSIDE AND ABOVE SILTSTONE CLIFF WITH ARTEMISIA TRIDENTATA, 

 GUTIERREZIA SAROTHRAE, CRYPTANTHA CELOSIOIDES, YUCCA GLAUCA. 



Land owner/manager: 



CUSTER NATIONAL FOREST, ASHLAND RANGER DISTRICT 



Comments : 



SEE GMF FOR BASE MAP SHOWING SUBPOPULATIONS. SURVEYED BY H. MARRIOTT 

 IN 1995. 



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

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

 BARRII) .] 



Specimens: SCHASSBERGER, L. A. (178). 1988. MONTU. 



