Betula pumila L.

Idaho: Boundary County: [locality and coordinates withheld; status in Idaho: S2 (Imperiled; IDNHP)],
Ca. 100 acres of open water with 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 with 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. In shrub carr community growing on deep Sphagnum mat on slightly raised hummocks with C. rostrata, Salix pedicellaris, and S. douglasii in the understory. Dominant. Shrub 3.5-4.0 m high. Phenology: Fruits.

R. Bursik 1052, May 19, 1988
With M. Mancuso
ID, Accession: 99330, Barcode: ID078087