Element Occurrence Record 31 



Howellia aquatilis 



Occurrence number: 009 



Global rank: G2 Forest Service status: SENSITIVE LIST 

 State rank: S2 Federal Status: CI 



Survey site name: LOST CREEK-CILLY CREEK PONDS 



EO rank: C 

 EO rank comments: MEDIUM-SIZED POPULATION, ADJACENT FOREST 



PREVIOUSLY LOGGED. 



County: LAKE 



USGS quadrangle: CILLY CREEK 



Township-range: 024N017W Section: 07 Precision: S 

 Township-range comments: NE4NE4NE4 



Survey date: 1987-07-01 Elevation: 3250 

 First observation: 1987 Slope/aspect: LEVEL 



Last observation: 1990-07-09 Size (acres) : 3 



Location: 

 fe SWAN VALLEY, 0.6 AIR MILES EAST OF ST. HWY. 83, 0.6 AIR MILES SOUTH OF 

 W SOUTH FORK LOST CREEK, CA. 5.0 AIR MILES SSE OF SWAN LAKE (TOWN). 



Element occurrence data: 



1990: 250 PLANTS (SEVERAL AREAS HIGH COVER OF LEMNA MINOR); 1989: 

 500-1000 PLANTS (SPECIES DOES NOT OCCUPY ALL OF THE AVAILABLE, 

 SUITABLE HABITAT AT THIS SITE); 1987: EST. 500-600 PLANTS; AREAS 

 AROUND SOUTH AND EAST SIDES OF POND, CLEARCUT CA. 15 YEARS AGO. 



General site description: 



IN SHALLOW WATER OF A GLACIAL POND, ORGANIC CLAY BOTTOM; WITH 

 EQUISETUM FLUVIATILE, CAREX VESICARIA, SIUM SUAVE; POPULUS TRICHOCARPA 

 BORDERING POND. 



Land owner/manager: 



FLATHEAD NATIONAL FOREST, SWAN LAKE RANGER DISTRICT 



Comments : 



VOUCHER-SHELLY, J.S. (13 57) AND ANNE MORLEY, 1987, MONTU. 



Information source: 



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

 17-19 JULY (HOWELLIA AQUATILIS) . 



Montana Natural Heritage Program 



