February 6, 1996 17 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: TARAXACUM ERIOPHORUM 

 Common Name: ROCKY MOUNTAIN DANDELION 



Global rank: G4 Forest Service status: 

 State rank: SI Federal Status: 



Element occurrence code: PDAST93 0G0 . 006 

 Element occurrence type: 



Survey site name 



EO rank 



EO rank comments 



HENNEEERRY RIDGE 



C 



POSSIBLY GOOD POPULATION SIZE, BUT DEGRADED 



HABITAT, REDUCED REPRODUCTION. 



County: BEAVERHEAD 



USGS quadrangle: ELI SPRING 



Township: Range: Section: TRS comments: 

 009S OllW 10 NE4; 3 SW4SE4 



Precision: S 



Survey date: 1995-06-15 Elevation: 6550 - 6580 



First observation: 1995-06-15 Slope/aspect: 



Last observation: 1995-06-15 Size (acres) : 5 



Location: 



CA. 18 MILES SOUTHWEST OF DILLON. OPEN MEADOWS ABOVE ELI SPRING. 



Element occurrence data: 



ESTIMATED OVER 1000 PLANTS, MOST IN ROSETTE FORM AND SIMILAR TO 

 IMMATURE CREPIS. IN FRUIT AND LATE ^'LOWERING 15 JXUnIE 1995. 

 ARTIFICIALLY DRY MICROHABITAT CONDITIONS MAY REDUCE FLOWERING, BUT 

 OPEN SOIL CONDITIONS PROMOTE RECRUITMENT. 



General site description: 



WET MEADOW AT HEADWATERS OF SPRING- FED STREAM IN ROLLING SAGEBRUSH 

 FOOTHILLS. LONG HISTORY OF LIVESTOCK GRAZING HAS PROMOTED FORMATION OF 

 HUMMOCKS 0.5 M HIGH WITH TOPS DOMINATED BY JUNCUS BALTICUS AND 

 MUHLENBERGIA RICHARDSONIS , AND INTERVENING TRENCHES DOMINATED BY CAREX 

 AQUATILIS AND C. NEERASCENSIS . THE SPECIES IS ON CRESTS OF HUMMOCKS 

 WITH HIERACIUM GRACILE, TRIFOLIUN LONGIPES, ANTENNARIA SPP., AND 

 CREPIS SPP. 



Land owner/manager: 



PRIVATELY OWNED LAND (INDIVIDUAL OR CORPORATE) 



Comments : 



HEAVILY TRAMPLED BY LIVESTOCK, FORMING LARGE HUMMOCKS. 



Information source: HEIDEL, BONNIE. [BOTANIST] MONT;iJJA NATURAL 



HERITAGE PROGRAM, 1515 EAST SIXTH AVENUE, P.O. BOX 

 201800, HELENA, MT 59620-1800. WORK: 4 06/444-3009. 



Specimens: HEIDEL, B. (1351). 1995. MONT. 



