Element Occurrence Record 3 2 



MIMULUS PRIMULOIDES 

 Occurrence number: 008 



Global rank: G4 Forest Service status: SENSITIVE LIST 

 State rank: SI Federal Status: 



Survey site name: ROCK ISLAND LAKES 



EO rank: B 

 EO rank comments: POPULATION IN GOOD CONDITION, BUT 



HABITAT IS GRAZED. 



County: BEAVERHEAD 



USGS quadrangle: HOMER YOUNGS PEAK 



Township-range: 006S017W Section: 22 Precision: S 

 Township-range comments: SW4NW4 



Survey date: 1990-09-03 Elevation: 8440 

 First observation: 1990 Slope/aspect: 5% / SOUTHWEST 



Last observation: 1990-09-03 Size (acres) : 5 



Location: 



BEAVERHEAD RANGE, ROCK ISLAND LAKES BASIN, SOUTH BASE OF HOMER YOUNGS 

 PEAK; 0.7 AIR MILE SSW OF SUMMIT OF HOMER YOUNGS PEAK, 0.2 AIR MILE 

 ENE OF SOUTHEAST CORNER OF NORTHERNMOST OF THE LAKES. 



Element occurrence data: 



NUMEROUS COLONIES OBSERVED, ESPECIALLY IN MOISTER AREAS; SPECIES 

 SPREADS RHIZOMATOUSLY; MOST PLANTS IN FRUIT, BUT A FEW STILL 

 FLOWERING; HABITAT IMPACTED BY LIVESTOCK GRAZING. 



General site description: 



IN MOIST, MOSSY AREAS OF MEADOWS, SATURATED BY SPRINGS AND SEEPS FROM 

 BASE OF ADJACENT MOUNTAIN SLOPE; WITH MIMULUS GUTTATUS , SAXIFRAGA 

 ARGUTA, SENECIO TRIANGULARIS, GENTIANOPSIS SIMPLEX, CAREX SPP. 

 GRANITIC BEDROCK. 



Land owner/manager: 



BEAVERHEAD NATIONAL FOREST, WISDOM RANGER DISTRICT 



Comments : 



VOUCHER - SHELLY, J.S. (1638), 1990, MONTU. 



Information source: 



SHELLY, J. STEPHEN. US FOREST SERVICE/TNC, FEDERAL BUILDING, RAWE, 

 P.O. BOX 7669, MISSOULA, MT 59807. 



Montana Natural Heritage Program 



