Element Occurrence Record 4' 



Howellia aquatilis 



Occurrence number: 044 



County: MISSOULA 



USGS quadrangle: CYGNET LAKE 



Township-range: 019N017W Section: 12 Precision: S 

 Township-range comments: S2SE4NE4, N2NE4SE4 



Survey date: 1987-07-29 Elevation: 4215 

 First observation: 1987 Slope/aspect: LEVEL 



Last observation: 1990-07-10 Size (acres) : 1 



Location: 

 ^ SWAN VALLEY, SOUTHEAST OF LINDBERGH LAKE RD. , 2.0 AIR MILES WEST OF 

 W ST. HWY 83. 



Element occurrence data: 



1990: PLANTS (POND HAD OILY SLICK ON SURFACE, DEEP RUST COLORED 

 WATER, VERY LITTLE SIUM SUAVE PRESENT); 1989: 90-120 PLANTS; 1987: 

 EST. 275-4 00 PLANTS; POND IS ALONGSIDE A HEAVILY USED GRAVEL ROAD, AND 

 IS UNDER A POWER LINE. 



General site description: 



GLACIAL POTHOLE DEPRESSION; WITH CAREX VESICARIA, SIUM SUAVE, 

 RANUNCULUS AQUATILIS; POPULUS TRICHOCARPA, P. TREMULOIDES PINUS 

 CONTORTA, LARIX OCCIDENTALIS AROUND POND. 



Land owner/manager: 



FLATHEAD NATIONAL FOREST, SWAN LAKE RANGER DISTRICT 



Comments : 



Information source: 



SCHASSBERGER, L. A. 1990. MONITORING AND FIELD SURVEYS OF 10-13 AND 

 17-19 JULY (HOWELLIA AQUATILIS) . 



Montana Natural Heritage Program 



