MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: ARABIS FECUNDA 

 Common Name: SAPPHIRE ROCKCRESS 



Global rank: G2 Forest Service status: SENSITIVE 

 State rank: S2 Federal Status: C2 



Element occurrence code: PDBRA06290. 018 

 Element occurrence type: 



Survey site name: MOOSE TOWN 



EO rank: 

 EO rank comments: 



County: SILVER BOW 



USGS quadrangle: MOUNT HUMBUG 



Township/Range Section: TRS Note: 



001S008W 03 S2, NW4 ; 10 N2 



001N008W 35 SW4 



Survey date: 1992-06-26 Elevation: 6700 - 7000 

 First observation: 1992-06-26 Slope/aspect: 045% / SOUTH 

 Last observation: 1992-06-26 Size (acres) : 35 



Location: 



FROM HIGHLAND ROAD, TAKE MOOSE TOWN ROAD SOUTHWEST CA. 2 MILES TO 

 MALONEY PARK. SITE IS ON BLUFFS NORTH OF MOOSE CREEK. 



Element occurrence data: 



1000-5000 INDIVIDUALS, FRUITING, EVIDENCE OF SEED DISPERSAL IN LARGEST 

 SUBPOPULATION. ADDITIONAL SUBPOPULATION CA . 1.5 MILES NORTHWEST: 2000 

 PLANTS, FRUITING, MANY SMALL PLANTS AS EVIDENCE OF REPRODUCTIVE 

 SUCCESS. THIRD SUBPOPULATION CA. 1 MILE NNW: 100-2000 STEMS, FRUITING, 

 MATURE FRUIT AND SMALL PLANTS PRESENT. 



General site description: 



OPEN TO PARTIALLY SHADED EXPOSURE ON UNDULATING AND CONVEX SLOPES. DRY 

 AREAS LOWER TO MIDSLOPE; SANDY SOIL OF CALCAREOUS METASEDIMENT PARENT 

 MATERIAL AND POSSIBLY DOLOMITE. ASSOCIATED DOMINANT SPECIES: AGROPYRON 

 SPICATUM, PHLOX MUSCOIDES, HAPLOPAPPUS ACAULIS, POTENTILLA FRUTICOSA, 

 PINUS FLEXILIS, JUNIPERUS COMMUNIS. ADDITIONAL ASSOCIATED SPECIES: 

 ERIGERON COMPOSITUS, DOUGLASIA MONTANA, SENECIO CANUS , ARCTOSTAPHYLOS 

 UVA-URSI, AND SEDUM LANCEOLATUM. 



Land owner/manager: 



PRIVATELY OWNED LAND (INDIVIDUAL OR CORPORATE) 

 DEERLODGE NATIONAL FOREST, BUTTE RANGER DISTRICT 



Comments: 

 I LARGEST SUBPOPULATION: ECODATA PLOT NUMBER 92PL103; MINING CLAIMS. NNE 

 f SUBPOPULATION: ECODATA PLOT NUMBER 92PL101; NO EVIDENCE OF 



DISTURBANCE. NNW SUBPOPULATION: ECODATA PLOT NUMBER 92PL102; 



LIVESTOCK. 



