30 



ELEMENT OCCURRENCE RECORD 

 Astragalus molybdenus (Leadville milk-vetch) 



Occurrence number: 005 



Global rank: G3 Forest Service status: SENSITIVE LIST 

 State rank: SI USFWS Status: NONE 



Survey site name: ROCKY MOUNTAIN-NORTHEAST 



EO rank: A 

 EO rank comments: LARGE COLONIES, IN UNDISTURBED ALPINE 

 AND SUBALPINE AREAS. 



County: TETON 



USGS quadrangle: OUR LAKE 



Township-range: 024N 009W Section: 20, SW4 



Survey date: 1989-08-10 Elevation: 8040 

 First observation: 1989 Slope/aspect: 0-35% / N, NW 



Last observation: 1989-08-30 Size (acres) : 20 



Location : 



SAWTOOTH RANGE, NORTH AND NE SLOPES OF ROCKY MOUNTAIN PEAK, 0.4-0.85 AIR 

 MILES EAST TO SE OF HEADQUARTERS CREEK PASS. 



Element occurrence data: 



THREE SUBPOPULATIONS OBSERVED, SOME SPREADING BY VEGETATIVE 

 REPRODUCTION; POPULATION SIZE DIFFICULT TO ESTIMATE. 



General site description: 



ALPINE AND SUBALPINE AREAS, 7440-8670', OFTEN IN DRYAS OCTOPETALA MATS 

 BUT OCCASIONALLY IN SCREE, ON LIMESTONE StBSTRATE. 



Land owner/manager: 



BOB MARSHALL WILDERNESS AREA 



LEWIS & CLARK NATIONAL FOREST, ROCKY MOUNTAIN RANGER DISTRICT 



Comments : 



SIGHT RECORD, VOUCHER COLLECTED FROM WEST SIDE OF ROCKY MOUNTAIN 

 (004), SHELLY (1602) AND SCHASSBERGER; SEEDS FOR SYSTEMATIC STUDY 

 COLLECTED FROM NORTHERN SUBPOPULATION ; BORDERS WATERSHED 10030104. 



Information source: 



SHELLY, J.S. 1989. FIELD SURVEYS IN TETON COUNTY, 7-10, 21-23, AND 

 28-30 AUGUST. 



Montana Natural Heritage Program 



