ELEMENT OCCURRENCE RECORD 42 



Grindelia howellii 



Occurrence number: 034 



Global rank: G3 Forest Service status: SENSITIVE LIST 

 State rank: S3 Federal Status: C2 



Survey site name: PEARSON CREEK 



EO rank: B 

 EO rank comments: GOOD POPULATION, ESP. NEAR MEADOW IN 



LESS DISTURBED HABITAT. 



County: POWELL 



USGS quadrangle: CHAMBERLAIN MOUNTAIN 



Township-range: 014N013W Section: 02 Precision: S 

 Township-range comments: S2SE4,SE4SW4 



Survey date: 1986-08-03 Elevation: 4270 

 First observation: 1986 Slope/aspect: 



Last observation: 1990-08-08 Size (acres) : 25 



Location: 



SOUTH OF THE BLACKFOOT RIVER, 0.3-0.65 AIR MILES NORTHEAST OF PEARSON 

 CREEK, CA. 2.5 AIR MILES SOUTHEAST OF SCOTTY BROWN BRIDGE. 



Element occurrence data: 



1986: 228 PLANTS COUNTED, 3 SUBPOPULATIONS (EST. 275-300 TOTAL 

 INDIVIDUALS); BEST GROUP (157 PLANTS) IS ADJACENT TO A MEADOW IN 

 SE4SE4, ALONG AN UNUSED JEEP TRAIL WHERE CENTAUREA MACULOSA IS SPARSE. 

 1990: 58 PLANTS LOCATED CA. 30 YARDS WEST OF PEARSON CREEK ROAD 

 JUNCTION. 



General site description: 



1986: BROWN LOAM SOILS; ROADSIDES AND OPENINGS, PINUS PONDEROSA/ 

 PSEUDOTSUGA MENZIESII/LARIX OCCIDENTALIS/FESTUCA SCABRELLA, WITH 

 ARTEMISIA TRIDENTATA, POTENTILLA GRACILIS. 1990: CENTAUREA MACULOSA 

 THICK. 



Land owner/manager: 



STATE LAND - UNDESIGNATED 

 CHAMPION INTERNATIONAL LAND 



Comments: 



VOUCHER-SHELLY, J.S. (1289), 1986, MONTU. 



Information source: 



SHELLY, J.S. 1986. FIELD SURVEYS IN MISSOULA AND POWELL COS. OF 25-26 

 JULY, 28-31 JULY, 2-6 AUGUST & 20-22 AUGUST. 



Montana Natural Heritage Program 



