MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: OROBANCHE CORYMBOSA 

 Common Name: FLAT-TOPPED BROOMRAPE 



Global rank: 

 State rank: 



G4 

 S2 



Forest Service status: 

 Federal Status: 



WATCH 



Element occurrence code: 

 Element occurrence type: 



PDORO04040.006 



Survey site name: 



EO rank: 



EO rank comments: 



HELLS CANYON 



County: MADISON 



USGS quadrangle: TABLE MOUNTAIN 



Survey date: 1992-07-29 



First observation: 1992-07-29 



Last observation: 1992-07-29 



Elevation: 6150 - 6650 

 Slope/aspect: 5-10% / SOUTH 

 Size (acres) : 50 



Location: 



HIGHLAND MOUNTAINS SOUTH OF BUTTE. SITES ARE OFF MAIN HELLS CANYON 

 ROAD. MAIN (CENTROID) POPULATION IS CA. 1.7 MILES SOUTHEAST OF HELLS 

 CANYON FOREST SERVICE STATION. 



Element occurrence data: 



OVER 2000 INDIVIDUALS, WITH 3 SUBPOPULATIONS . OLD STEMS, 

 FLOWERING PLANTS. ROOTS ARE FULL OF WORMS. 



SOME 



General site description: 



OPEN EXPOSURE ON RIDGE. CONVEX SLOPE SHAPE. DRY AREA ON RESIDUAL 

 MOUNTAIN SLOPES. SANDY SOIL, GRANITE PARENT MATERIAL. ASSOCIATED 

 DOMINANT SPECIES: ARTEMISIA TRIDENTATA, FESTUCA IDAHOENSIS, AGROPYRON 

 SPICATUM. ADDITIONAL ASSOCIATED PLANT SPECIES: POA SECUNDA, ERIGERON 

 COMPOSITUS, ANTENNARIA MICROPHYLLA. 



Land owner/manager: 



DEERLODGE NATIONAL FOREST, JEFFERSON RANGER DISTRICT 

 BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments: 



DISTURBANCE FROM LIVESTOCK EVIDENT. ECODATA PLOT #92PL116, 92PL117, 



Information source: 



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

 | MISSOULA, MT 59812. 



Specimens: 



LESICA, P. (5811). 1992. MONTU . 



