Scientific Name: JUNIPERUS SCOPULORUM/CERCOCARPUS LEDIFOLIUS PA 



Common Name: ROCKY MOUNTAIN JUNIPER/ CURL-LEAF MOUNTAIN MAHOGANY ASSOCIATION 



Global rank: G3 Forest Service status: 

 State rank: S3 Federal Status: 



Element occurrence code: C2A2ABABN0 . 003 



Survey site name: HOGBACK NORTH RIDGE 



EO rank: B 

 EO rank comments: SITE DOES NOT EXHIBIT EVIDENCE OF CATTLE 



USE. 



County: BEAVERHEAD 



USGS quadrangle: BLOCK MOUNTAIN 



Township: 005S Range: 008W Section: 02 Precision: S 



Township-range comments: W2 



Survey date: 1991-06-06 Elevation: 5640 

 First observation: 1991 Slope/aspect: 31% / WEST 



Last observation: 1991-06-06 Size (acres) : 1 



Location: 



FROM GLEN, PROCEED SOUTH ON PAVEMENT 7.4 MILES TO GRAVEL CROSSROAD. 

 TAKE THIS GRAVEL ROAD 0.6 MILE EAST TO AN INTERSECTION WITH A SIDE 

 ROAD. TAKE THIS SIDE ROAD CA. 3 MILES TO A Y INTERSECTION. GO RIGHT 

 AND FOLLOW THE MOST PROMINENT ROAD CA. 2 MILES TO THE RIVER. PLOT IS 

 ON CREST OF HOGBACK, CA. 1.2 MILES ESE. 



Element occurrence data: 



WITHIN PLOT, 21 SPECIES OBSERVED. DOMINANTS INCLUDE: JUNIPERUS 

 SCOPULORUM (20% CANOPY COVER) , CERCOCARPUS LEDIFOLIUS (30%) , AGROPYRON 

 SPICATUM (20%), ARISTIDA LONGISETA (10%), AND STIPA COMATA (10%). 

 COMPLETE LIST ON FILE AT MONTANA NATURAL HERITAGE PROGRAM. 



General site description: 



STRUCTURALLY CONTROLLED MOUNTAIN SLOPE; PLOT POSITION IS UPPER SLOPE. 

 QUARTZITE PARENT MATERIAL AND TYPIC USTORTHENT SOIL SUBGROUP. GROUND 

 COVER: BARE SOIL (10%), TOTAL COARSE FRAGMENTS (50%). 



Land owner/manager: 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments: 



MTNHP PLOT #91RD012. SURVEY CONDUCTED BY R. L. DEVELICE AND A. 

 McALPINE. CA. 30% OF THE CERCOCARPUS LEDIFOLIUS PLANTS PRESENT ARE 

 DEAD, AND MANY OF THE LIVING C. LEDIFOLIUS HAVE DEAD BRANCHES. 

 JUNIPERUS SCOPULORUM MORTALITY IS ALSO PRESENT. THIS OCCURRENCE RECORD 

 ALSO INCLUDES PLOT #91RD011, LOCATED CA . 0.2 MILE NORTH. 



Information source: 



DEVELICE, ROBERT. [COMMUNITY ECOLOGIST] . MONTANA NATURAL HERITAGE 

 PROGRAM, 1515 EAST 6TH AVE., HELENA, MT 59620. 



U4 



