MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: CIRSIUM SUBNIVEUM 

 Common Name: JACKSON'S HOLE THISTLE 



Global rank: G3G4 Forest Service status: SENSITIVE 

 State rank: S2 Federal Status: 



Element occurrence code: PDAST2E2S0 . 007 

 Element occurrence type: 



Survey site name: ELK LAKE 



EO rank: B 

 EO rank comments: LARGE, HEALTHY POPULATION, SURROUNDING AREA IS 

 HEAVILY GRAZED. 



County: BEAVERHEAD 



USGS quadrangle: HIDDEN LAKE BENCH 



Township: Range: Section: TRS comments: 

 013S OOIE 16 SE4 



Precision: S 



Survey date: 1991-08-21 Elevation: 6800 



First observation: 1991 Slope/aspect: 0-40% / NORTHWEST 



Last observation: 1991-08-21 Size (acres) : 30 



Location: 



CENTENNIAL VALLEY, CA . 0.3 MILE NORTH OF ELK LAKE, NORTHWEST-FACING 

 ROCKY SLOPE. 



Element occurrence data: 



100+ PLANTS, MOSTLY IN FRUIT. 



General site description: 



OPEN, ERODING SCREE SLOPE (TERTIARY VOLCANIC ROCK) , WITH ARTEMISIA 

 TRIDENTATA, AGROPYRON SPICATUM, POA SECUNDA, JUNIPERUS COMMUNIS AND 

 POLYPODIUM HESPERIUM. 



Land owner/manager: 



BEAVERHEAD NATIONAL FOREST, MADISON RANGER DISTRICT 



Comments: 



Information source: ROE, LISA SCHASSBERGER. [BOTANIST.] 556 SPENCER, 

 HELENA, MONTANA 59601. 



Specimens: ROE, L. S. (480). 1991. MONT. 



