MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: ASTRAGALUS SCAPHOIDES 

 I Common Name: BITTERROOT MILKVETCH 



Global rank: 

 State rank: 



G3 

 SI 



Forest Service status: 

 Federal Status: 



3C 



Element occurrence code: PDFAB0F7VO . 008 

 Element occurrence type : 



Survey site name: CLARK CANYON SCHOOL SECTION 



EO rank: B 

 EO rank comments: SMALL POPULATION, NO EVIDENCE OF RECENT GRAZING. 



County : BEAVERHEAD 



USGS quadrangle : ELI SPRING 



Township : Range: Section: TRS comments: 



009S 011W 25 SW4SW4; 35 NE4NE4 ; 36 NW4NW4 



009S 011W 26 NW4 



Precision 



Survey date 



First observation 



Last observation 



1986-06-22 



1986 



1994-06-20 



Elevation: 5860 

 Slope/aspect : 

 Size (acres) : 37 



6280 



Location : 



CA. 2.2 5 AIR MILES NORTH OF CLARK CANYON RESERVOIR, ALONG DIRT ROAD 

 HEADING NORTH TO HENNEBERRY RIDGE; CA. 3 AIR MI. W. OF 1-15, CA. 18 

 MILES SW OF DILLON. 



Element occurrence data: 



1986: CA. 1500-2000 PLANTS, EARLY TO MATURE FRUIT; CATTLE TRAILS 

 TRAVERSE A PORTION OF THE HABITAT; A FEW PLANTS HAD BEEN GRAZED; MANY 

 ACRES OF POTENTIAL HABITAT IN THE AREA; MORE SURVEY WORK NEEDED. 

 6/13/94: 60% VEGETATIVE, 40% EARLY FRUIT, 1000-10,000 ESTABLISHED 

 PLANTS, SOME BROWSED HEADS. 6/20/94: 2 SUBPOPULATIONS TO NORTHEAST 

 WITH CA. 100 PLANTS, 50% FLOWERING, 50% FRUITING. 



General site description: 



GRAVELLY LOAM SOILS; ARTEMISIA TRIDENTATA/STIPA COMATA, W/ AGROPYRON 

 SPICATUM, ARTEMISIA FRIGIDA, LEPTODACTYLON PUNGENS, ORYZOPSIS 

 HYMENOIDES, PHACELIA LINEARIS, OPUNTIA. 



Land owner /manager : 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 

 STATE LAND - UNDESIGNATED 



Comments : 



Information source: SHELLY, J. S. 1986. [FIELD SURVEYS IN 3EAVERHEAD 



COUNTY OF 18-22 JUNE.] 



Specimens: SHELLY, J. S. (1157) & G. V. KING. 1986. MONTU. 

 VANDERHORST, J. (5200). 1994. MONT. 



