MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: ARABIS FECUNDA 

 Common Name: SAPPHIRE ROCKCRESS 



Global rank: 

 State rank: 



G2 

 S2 



Forest Service status: SENSITIVE 

 Federal Status: C2 



Element occurrence code: PDBRA06290. 017 

 Element occurrence type: 



Survey site name: SOUTH FORK TUCKER CREEK 



EO rank: 

 EO rank comments: 



County: SILVER BOW 



USGS quadrangle: TUCKER CREEK 



Township/Range 

 001N008W 



Section: TRS Note: 

 31 N2 



Survey date: 1992-06-27 



First observation: 1992-06-27 



Last observation: 1992-06-27 



Elevation: 6720 - 6980 

 Slope/aspect: 50% / SOUTHWEST 

 Size (acres) : 25 



i Location: 



FROM DIVIDE (TOWN) TAKE FRONTAGE ROAD NORTH CA. 5 MILES. GO EAST UNDER 

 1-15 TO RANCH. FOLLOW DIRT ROAD TO NORTHEAST CA. 4 MILES, KEEPING TO 

 RIGHT AT FORKS, TO SITE ON EITHER SIDE OF SOUTH FORK TUCKER CREEK, CA. 

 1 MILE NORTHEAST OF RESERVOIR. 



Element occurrence data: 



10,000+ INDIVIDUALS; FRUITING, 



SEED DISPERSAL. 



General site description: 



PARTIALLY SHADED EXPOSURE ON CONVEX SLOPE; DRY AREA ON RESIDUAL LOWER 

 MOUNTAIN SLOPE. SANDY SOIL OF CALCAREOUS METASEDIMENT PARENT MATERIAL. 

 ASSOCIATED DOMINANT SPECIES: CERCOCARPUS LEDIFOLIUS, JUNIPERUS 

 SCOPULORUM, AGROPYRON SPICATUM. ADDITIONAL ASSOCIATED SPECIES: 

 HAPLOPAPPUS ACAULIS, CYMOPTERUS BIPINNATUS. DEER SCAT PRESENT. 



Land owner/manager: 



BLM: BUTTE DISTRICT, HEADWATERS RESOURCE AREA 

 HUMBUG SPIRES PRIMITIVE AREA 



Comments: 



ECODATA PLOT NUMBER 9 2PL106. 



Information source: 



LESICA, P. DIVISION OF BIOLOGICAL SCIENCES, UNIV. OF MONTANA, 

 MISSOULA, MT 59812. 



Specimens: 

 LESICA, 



P. (5729) . 1992. MONTU. 



