January 4, 1994 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: ARABIS FECUNDA 

 ^Common Name: SAPPHIRE ROCKCRESS 



Global rank: 

 State rank: 



G2 

 S2 



Forest Service status: 

 Federal Status: 



SENSITIVE 

 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: 

 OOIN 008W 



Section: 

 31 



TRS comments: 

 N2 



Precision: S 



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 



Location: 



FROM DIVIDE (TOWN) TAKE FRONTAGE ROAD NORTH CA . 



1-15 TO RANCH. FOLLOW DIRT ROAD TO NORTHEAST CA 



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



1 MILE NORTHEAST OF RESERVOIR. 



5 MILES. GO EAST UNDER 

 4 MILES, KEEPING TO 



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 92PL106. 



Information source: 



LESICA, PETER. DIVISION OF BIOLOGICAL SCIENCES, 

 UNIVERSITY OF MONTANA, MISSOULA, MT 59812. 



Specimens: LESICA, P. (5729). 1992. MONTU. 



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