MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



entific Name: ASCLEPIAS OVALIFOLIA 

 mon Name: OVALLEAF MILKWEED 



bal rank: G3G5 Forest Service status: 

 te rank: SI Federal Status: 



ment occurrence code: PDASC021D0 . 001 

 ment occurrence type : 



vey site name: ICEBOX SPRING 



EO rank : 

 rank comments : 



City: CARTER 



S quadrangle: TIMBER HILL 



nship: Range: Section: TRS comments: 

 S 061E 33 NE4 



Precision 



Survey date 



st observation 



st observation 



1994-07-02 

 1994-07-02 



Elevation: 3760 

 Slope/aspect: 2- 

 Size (acres) : 1 



- 3840 

 5% / NORTH 



ation: 

 CA. 2 5 MILES SOUTHEAST OF EKALAKA. 



ment occurrence data: 

 2 SUBPOPULATIONS, AT LEAST 4 00 PLANTS, 30-40% IN FLOWER, A FEW IN 

 EARLY FRUIT. MANY STERILE STEMS, EXTENSIVE COLONY. 



eral site description: 

 DRY, PARTIALLY SHADED, NARROW TERRACE ALONG DRAINAGE IN DISSECTED 

 MESA. SANDSTONE PARENT MATERIAL, SANDY LOAM SOIL. ASSOCIATED SPECIES: 

 POA PRATENSIS, MAHONIA REPENS , SYMPHORICARPOS OCCIDENTALIS , GALIUM 

 BOREALE, STIPA VIRIDULA, AGROPYRON SMITHII (SPARSE) , SMALL PRUNUS 

 VIRGINIANA, CRATAEGUS SP., ROSA ACICULARIS, AGROPYRON CANINUM, 

 SMILACINA STELLATA, LACTUCA, APOCYNUM ANDROSAEMI FOLIUM, VICIA 

 AMERICANA, THALICTRUM VENULOSUM, ACHILLEA MILLEFOLIUM. 



d owner/manager: 

 CUSTER NATIONAL FOREST, SIOUX RANGER DISTRICT 



ments : 



OBSERVED BY K. 

 AREA. 



DUEHOLM AND B. HEIDEL. HEAVY AND MODERATE GRAZING IN 



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



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

 201800, HELENA, MT 59620-1800. WORK: 406/444-3009. 



cimens: DUEHOLM, K. (12217) AND B. HEIDEL. 1994. MONTU. 



