MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: BALSAMORHIZA MACROPHYLLA 

 Common Name: LARGE-LEAFED BALSAMROOT 



Global rank: G3G5 

 State rank: SI 



Forest Service status: 

 Federal Status: 



SENSITIVE 



Element occurrence code; 

 Element occurrence type; 



PDAST11070.002 



Survey site name; 



EO rank; 



EO rank comments ; 



ODELL CREEK 



A 



LARGE POPULATION IN EXCELLENT CONDITION HABITAT. 



County: BEAVERHEAD 



USGS quadrangle: SLIDE MOUNTAIN 



Township; 



015S 



015S 



Range; 



002W 



OOIW 



Section: TRS comments: 



13 N2, NE4SE4; 12 S2SE4 

 18 SW4NW4, NW4SW4 



Precision: 



Survey date: 



First observation: 



Last observation: 



1992-07-05 

 1992-07-05 

 1992-07-05 



Elevation: 7500 - 7920 

 Slope/aspect: 0-15% / VARIED 

 Size (acres) : 160 



Location: 



CENTENNIAL MOUNTAINS, CA. 4 MILES UP ODELL CREEK TRAIL SOUTH TO 

 CONTINENTAL DIVIDE RIDGES. 



Element occurrence data: 



5,000-10,000 PLANTS, NOTABLY VIGOROUS AND MANY-FLOWERED, 

 VERY LATE FLOWER. COMMON OVER LARGE AREA. 



IN FRUIT AND 



General site description: 



SUBALPINE RIDGES CONTIGUOUS WITH CONTINENTAL DIVIDE; IN BROAD 

 LUXURIANT MEADOWS DOMINATED BY FESTUCA SCABRELLA. ASSOCIATED SPECIES: 

 LIGUSTICUM FILICINUM, GERANIUM VISCOSISSIMUM, ARTEMISIA TRIDENTATA, 

 MELICA SPECTABILIS, AGASTACHE URTICIFOLIA, PERIDERIDIA GAIRDNERI , 

 POTENTILLA GRACILIS. 



Land owner /manager : 



U.S. SHEEP EXPERIMENT STATION 



Comments: 



THERE IS A HISTORIC COLLECTION OF THIS SPECIES FROM THE CENTENNIAL 

 MOUNTAINS IN THIS AREA. POPULATION SPANS STATE LINE ALONG CONTINENTAL 

 DIVIDE. 



Information source; 



HEIDEL, B. L. 1992. [FIELD SURVEY TO CENTENNIAL 

 MOUNTAINS OF 5 JULY . ] 



Specimens: HEIDEL, B. (754). 1992. MONT. 



