MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: THELYPODIUM SAGITTATUM SSP SAGITTATUM 

 Common Name: SLENDER THELYPODY 



Global rank: G3G4T? Forest Service status: 

 State rank: SI Federal Status: 



Element occurrence code: PDBRA2N0E2 . Oil 

 Element occurrence type: 



Survey site name: MUD LAKE 



EO rank: 

 EO rank comments: 



County: BEAVERHEAD 



USGS quadrangle: CORRAL CREEK 



Township: Range: Section: TRS comments: 

 014S 005W 14 SW4; 22 NE4SE4 



Precision: S 



Survey date: Elevation: 6620 - 6690 



First observation: 1993-07-02 Slope/aspect: LEVEL 



Last observation: 1993-07-02 Size (acres) : 5 



Location: 



CENTENNIAL VALLEY; GO WEST CA . 1.5 MILE ON ELM ACCESS ROAD SOUTHWEST 

 OF LYONS BRIDGE (2.5 MILES NORTH OF CENTENNIAL VALLEY ROAD), THEN 

 SOUTH FOR 1 MILE TO MUD LAKE. 



Element occurrence data: 



2 SUBPOPULATIONS, 1 NEAR THE NORTH SHORE OF MUD LAKE (40 INDIVIDUALS, 

 75% FRUITING, 25% FLOWERING) ; 1 SOUTH OF MUD LAKE JUST NORTH OF THE 

 CENTENNIAL VALLEY ROAD (15 INDIVIDUALS, 100% FLOWERING). 



General site description: 



MOIST, PEATY BOTTOMLAND WITH SARCOBATUS VERWICULATUS , AGROPYRON 

 SMITHII, CAREX ROSTRATA, JUNCUS BALTICUS (NORTH POPULATION); IRIS 

 MISSOURIENSIS, ANTENNARIA MICROPHYLLA, POA PRATENSIS, KOELERIA 

 CRISTATA, CIRSIUM SCARIOSUM, ELYMUS CINERUS, AGROPYRON SMITHII (SOUTH 

 POPULATION) . 



Land owner/manager: 



PRIVATELY OWNED LAND (INDIVIDUAL OR CORPORATE) 

 BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments: 



NORTH POPULATION IS ADJACENT TO A 2 -TRACK ROAD; NO EVIDENCE OF 

 DISTURBANCE. SOUTH POPULATION'S LOCATION NEAR ROAD AND FENCE INCREASES 

 CHANCE OF TRAMPLING. OBSERVED BY DENISE CULVER. 



Information source: CULVER, D. 1993. [MTNHP FIELD SURVEYS IN THE 



CENTENNIAL VALLEY, MONTANA, MAY-AUGUST.] 

 Specimens: 



