Ranunculus pensylvanicus L. f.

Idaho: Boundary County: Panhandle NF, Perkin's Lake, 3 miles N of US Hwy 2, 2 miles W of Montana state line. Elev. 2632 ft.
T62N R03E S5 NE
Datum: WGS 84. Uncertainty: 569 meters. Coordinate Source: Calc. from TRS. Updated PLSS locality from R3W to R3E.
Ca. 100 acres of open water w/ extensive littoral zone w/ dense rhizomatous stands of Nuphar polysepalum, Brasenia schreberi, and Potamogeton amplifolius surrounded by floating Sphagnum mats to the N and E. Shrub carr community on mat dominated by rather dense stand of Betula pumila, Alnus incana, Salix spp., and Spiraea douglasii w/ an understory of Carex lasiocarpa and C. rostrata. Water chem.: pH 7.6; alkalinity 45 mg/L; conductivity 97 mmhos; hardness 42.8 mg/L CaCO3. Rare, growing w/ Bidens cernua, Eleocharis ovata, and Epilobium glandulosum on floating island of muck formed by "risen" chunk of substrate. Petals yellow. Phenology: Flowers and Fruits.

R. Bursik 1621, Sep 5, 1988
With F. Rabe
ID, Accession: 99358, Barcode: ID042112