MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



scientific Name: ARABIS FECUNDA 

 Common Name: SAPPHIRE ROCKCRESS 



Slobal rank: G2 Forest Service status: SENSITIVE 

 State rank: S2 Federal Status: C2 



Element occurrence code: PDBRA06290 . 016 

 Element occurrence type: 



Survey site name: TUCKER CREEK 



EO rank: 

 EO rank comments: 



County: SILVER BOW 



USGS quadrangle: TUCKER CREEK 



Elevation: 6640 - 6880 

 Slope/aspect: 35% / SOUTH 

 Size (acres) : 40 



>cation : 



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

 UNDER 1-15 TO RANCH, THEN TAKE ROAD TO RESERVOIR. SITE IS ON HILL 

 NORTH OF RESERVOIR. 



Element occurrence data: 



10,000+ INDIVIDUALS, FRUITING, SEED DISPERSAL. 



General site description: 



OPEN EXPOSURE ON UNDULATING SLOPE, DRY AREA ON RESIDUAL MOUNTAIN 

 MIDSLOPE. SANDY SOIL OF CALCAREOUS METASEDIMENT PARENT MATERIAL. 



, ASSOCIATED DOMINANT SPECIES: CERCOCARPUS LEDIFOLIUS, AGROPYRON 



I SPICATUI-I, HAPLOPAPPUS ACAULIS . ADDITIONAL ASSOCIATED SPECIES: 



:' ORYZOPSIS HYMENOIDES, CYMOPTERUS BIPINNATUS. 



[Land owner/manager: 



BLM: BUTTE DISTRICT, HEADWATERS RESOURCE AREA 

 STATE LAND - UNDESIGNATED 

 HUMBUG SPIRES PRIMITIVE AREA 



Comments: 



ECODATA PLOT NUMBER 92PL105. LITTLE OR NO LIVESTOCK DISTURBANCE; DEER 

 SCAT. 



Information source: 



-1^; LESICA, P. DIVISION OF BIOLOGICAL SCIENCES, UNIV. OF MONTAl^A, 

 • MISSOULA, MT 59812. 



Specimens: 



