December 12, 1994 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: RORIPPA CALYCINA 

 Common Name: PERSISTENTSEPAL YELLOWCRESS 



Global rank: G3 Forest Service status: WATCH 

 State rank: SI Federal Status: C2 



Element occurrence code: PDBPJ\.2704 . 001 

 Element occurrence type: 



Survey site name: CIRCLE 



EG rank : 

 EO rank comments : 



County: MCCONE 



USGS quadrangle : WELDON 



Township: Range: Section: TRS comments: 

 021N 045E 33 OR 34 



Precision 



Survey date 



First observation 



Last observation 



M 



1993-06-21 Elevation: 2530 



1980 Slope/aspect: 



1980-07 Size (acres) : 



Location: 



ON A RESERVOIR ASSOCIATED WITH MCGUIRE CREEK, CA. 15 MILES NORTHWEST 

 OF CIRCLE. 



Element occurrence data: 



NOT RELOCATABLE IN 1993, WHETHER DUE TO HIGH WATER CONDITIONS OR LOCAL 

 EXTIRPATION. 



General site description: 



SHORELINE OF IMPOUNDMENT ON MCGUIRE CREEK OR TRIBUTARY. HIGHLY . 

 EUTROPHIC WATERS AND MAJOR ALTERATION OF SURROUNDING VEGETATION UNDER 

 SHEEP GRAZING. 



Land owner/manager: 



PRIVATELY OWNED LAND (INDIVIDUAL OR CORPORATE) 



Comments : 



ACCIDENTAL OCCURRENCE, AND POSSIBLY NO LONGER EXTANT. TROUT DAM HAS 

 STEEP BARE ALKALINE MAJ^GINS , WHILE HOME DAM IS SURROUNDED BY GENTLE 

 SLOPES WITH MEADOW MARGINS. WATER LEVELS IN BOTH DAMS WERE BELOW 

 AVERAGE UNTIL JUNE WHEN THEY ROSE ABOVE AVERAGE FOR 1993. 



Information source: HEIDEL, B. L. 1994. SENSITIVE PLANT SURVEY IN 



GARFIELD AND MCCONE COUNTIES, MONTANA. UNPUBLISHED 

 REPORT TO THE MILES CITY DISTRICT, BUREAU OF LAND 

 MANAGEMENT. MONTANA NATURAL HERITAGE PROGRAM, 

 HELENA. [IN PROGRESS] 



Specimens: PRODGERS, R. (S.N.). 1980. SPECIMEN #83830. MONTU. 



