Scientific Name: SPIRANTHES DILUVIALIS 

 Common Name: UTE LADIES' TRESSES 



Global rank: G2 

 State rank: SI 



Forest Service status; 

 Federal Status; 



LT 



Element occurrence code: 

 Element occurrence type: 

 Survey site name: 

 EO rank: 

 EO rank comments : 

 County: JEFFERSON 



PMORC2B100.001 



WHITEHALL 



BC 



SMALL POPULATION SIZE. 



uses quadrangle: WHITEHALL 



Township: Range: Section: TRS comments; 



OOIN 004W 00 



Precision: 



Survey date: 



First observation: 



Last observation: 



1994-08-15 

 1994-08-03 

 1996-08-24 



Elevation: 4350 

 Slope/aspect: 

 Size (acres) : 1 



Location: 



CONTACT THE MONTANA NATURAL HERITAGE PROGRAM. 



Element occurrence data: 100+ PLANTS AS DETERMINED FROM FOUR YEARS OF 



OBSERVATION AND MONITORING. 



71 FLOWERING STEMS IN 1994; 26 FLOWERING STEMS IN 1995 THAT WERE ALL 

 SHORTER HEIGHT AND FEWER- FLOWERED COMPARED TO 1994; 49 FLOWERING STEMS 

 IN 1996; 32 FLOWERING PLANTS IN 1997 PLUS 18 VEGETATIVE PLANTS. 



General site description: 



LOCALIZED WET MEADOW BORDER IN VALLEY BOTTOM SURROUNDED BY ALKALINE 

 HABITAT. ASSOCIATED WITH CALAMAGROSTIS INEXPANSA, CAREX PRAEGRACILIS, 

 AGROPYRON CANINUM, JUNCUS NODOSUS, GENTIANELLA AMARELLA, ASTER 

 HESPERIUS, JUNCUS LONGISTYLIS. THE MOIST SETTING IS INUNDATED EARLY IN 

 THE GROWING SEASON. 



Land owner/manager: 



PRIVATELY OWNED LAND 



[INDIVIDUAL OR CORPORATE) 



Comments : 



C. SHEVIAK CONFIRMED CHROMOSOME COUNT 2n = 74 IN UNPUBLISHED LAB 

 ANALYSIS OF SPECIMENS FROM THE SITE. AT LEAST 3 PLANTS COUNTED IN 1995 

 TRAMPLED BY LIVESTOCK. 



Information source: 



HEIDEL, BONNIE. [BOTANIST] MONTANA NATURAL 

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

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



Specimens: HEIDEL, B. (1245). 1994. MONT. 

 HEIDEL, B. (1316). 1994. MONTU. 



