27 

 ELEMENT OCCURRENCE RECORD 

 Astragalus molvbdenus (Leadville milk-vetch) 



Occurrence number: 002 



Global rank: G3 Forest Service status: SENSITIVE LIST 

 State rank: SI USFWS Status: NONE 



Survey site name: OUR LAKE 



EO rank: A 

 EO rank comments: 



County: TETON 



uses quadrangle: OUR LAKE 



Township-range: 024N 009W Section: 18, NE4SW4 



Survey date: 1989-08-09 Elevation: 8120 



First observation: 1989 Slope/aspect: 0-35% / NORTH, WEST, 

 LEVEL 



Last observation: 1990-07-28 Size (acres) : 25 



Location: 



CA. 33 MILES WEST OF CHOTEAU . FROM THE WEST END OF F.S. ROAD n09, 

 TRAVEL 2 MILES SSW TO OUR LAKE; SITE IS IN BASIN ABOVE AND SOUTH OF 

 THE LAKE. 



Element occurrence data: 



HEAVILY IN FRUIT (1989). ONE LARGE POPULATION AND ONE SMALL 

 POPULATION; NUMEROUS SCATTERED INDIVIDUALS. MANY PLANTS IN FLOWER 

 (1990) . 



General site description: ' 



IN TURFY, MOIST LIMESTONE SOIL, WITH DRYAS OCTOPETALA, CERASTIUM 

 ARVENSE, SMELOWSKIA CALYCINA, ERIGERON COMPOSITUS, AND POLEMONIUM 

 PULCHERRIMUM. 



Land owner/manager: 



LEWIS & CLARK NATIONAL FOREST, ROCKY MOUNTAIN RANGER DISTRICT 



Comments : 



VOUCHER - SCHASSBERGER, L.A. (343) AND J. PIERCE, NY, 1989. 



Information source: 



SCHASSBERGER, L.A. 1989. FIELD SURVEYS OF THE FRONT RANGE MOUNTAINS, 

 7-10 AND 21-23 AUGUST. 



Montana Natural Heritage Program 



