February S, 19 96 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



.Scientific Name: STEPHANOMERIA SPINOSA 

 Common Name: SPINY SKELETONWEED 



Global rank: G4 Forest Service status: 

 State rank: SI Federal Status: 



Element occurrence code: PDAST8U0E0 . 006 

 Element occurrence type : 



Survey site name 



EO rank 



EO rank comments 



MADISON RIVER 



BC 



GOOD- FAIR POPULATION SIZE. 



County: MADISON 



USGS quadrangle: BUCKS NEST 



Township: Range: Section: TRS comments: 



009S OOIW 23 NE4; 13 SE4SW4 ; 14 SE4 ; 24 SW4NW4 



Precision 



Survey date 



First observation 



Last observation 



S 



1995-08-31 Elevation: 5600 - 5720 



1995-07-25 Slope/aspect: 0% / EAST 



1995-08-31 Size (acres) : 



Location: 



CA. 1 MILE SOUTH OF ELM WEST MADISON RECREATION AREA CAMPGROUND, ON 

 ALLUVIAL BENCHES WEST OF MADISON RIVER. 



Element occurrence data: 



EXTENSIVE POPULATION IN VERY LOW DENSITY ON BOTH SIDES OF MADISON 

 RIVER VALLEY. IN EARLY BUD 2 5 JULY 1995 AND LATE FLOWERING 31 AUG 

 1995. 



General site description: 



ALLUVIAL BENCHES ALONG MADISON RIVER VALLEY COVERED BY DRY GRASSLAND 

 AND DOMINATED BY COMBINATIONS OF AGROPYRON SPICATUM, STIPA COMATA, AND 

 SELAGINELLA DENSA . OTHER ASSOCIATED SPECIES INCLUDE: CHRYSOPSIS 

 VILLOSA, KOELERIA MACRANTHA, GUTIERREZIA SAROTHRAE, ARTEMISIA FRIGIDA. 



Land owner/manager: 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments: 



SURVEYED BY J. VAITOERHORST 25 JULY 1995 AND BY B. HEIDEL 31 AUG 1995. 



Information source: HEIDEL, BONNIE. [BOTANIST] MONTANA NATURAL 



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

 201800, HELENA, MT 59620-1800. WORK: 406/444-3 009. 



Specimens: VANDERHORST, J. (5471). 1995. MONT. 



