CIRSIUM LONGISTYLUM * 006 

 LONG-STYLED THISTLE 



Global rank: G2Q Forest Service status: 

 State rank: S3 Federal Status: C2 



Survey site name: DUCK CREEK PASS 



EO rank: BC 

 EO rank comments: LARGE POPULATION, PRIMARILY ROADSIDE, PROBABLY 

 HYBRIDIZING WITH CIRSIUM HOOKERIANUM. 



County: MEAGHER 



BROADWATER 



USGS quadrangle: GIPSY LAKE 



BOULDER BALDY 

 GURNETT CREEK EAST 



Township: Range: Section: TRS comments: 

 009N 004E 32 27,28,33,31,30 

 25 36 



Survey date: 1992-07-27 Elevation: 6320 -7600 

 First observation: 1976 Slope/aspect: 



Last observation: 1992-10-02 Size (acres) : 20 



Location: 



BIG BELT MOUNTAINS, DUCK CREEK PASS ROAD (FS RD #139), 

 BEGINNING JUST WEST OF TURNOFF TO THOMPSON GULCH GUARD 

 STATION, AND SCATTERED IN SUBPOPULATIONS ALONG ROAD FOR 6.4 

 MILES TO THE WEST. 



Element occurrence data: 



1992: 1000-5000 INDIVIDUALS, ALL IN FLOWER. 1983: SOME 

 SUBPOPULATIONS HAVE >100 PLANTS; ANOTHER THISTLE, POSSIBLY 

 C. HOOKERIANUM, OCCURS IN ALL AREAS, PROBABLY HYBRIDIZING. 



General site description: 



1992: OPEN GRASSLANDS WITH SCATTERED SHRUBS BETWEEN ROAD 

 EDGE AND FOREST, WITH FESTUCA IDAHOENSIS, TRISETUM SP., POA 

 PRATENSIS, BROMUS SP. , PSEUDOTSUGA MENZIESII, AND PINUS 

 CONTORTA. 1983 (RAMSTETTER) : MOIST FIELDS AND ALONG 

 ROADSIDE; WITH LUPINUS, SOLIDAGO. 



Land owner /manager : 



HELENA NATIONAL FOREST, TOWNSEND RANGER DISTRICT 



Comments: 



SOME DISTURBANCE CAUSED BY ROAD CONSTRUCTION AND 

 MAINTENANCE. 



Information source: 



POOLE, J. 1992. [MTNHP FIELD SURVEYS TO ELKHORN AND BIG BELT 



MOUNTAINS, HELENA NATIONAL FOREST, JULY 12, 27-29, AUGUST 



3-7, 14, 17, 26 AND 27.] 

 Specimens: 



RAMSTETTER, J. (11, 13). 1983. MONTU. 



DORN, R. D. (2783). 1976. MONTU. 



LESICA, P. (5846). 1992. 



Element Occurrence Record 



Plant Species of Special Concerr 



