Betula glandulosa Michx.

Idaho: Bonner County: Private land; Lee Lake, 2 miles NE of Coolin; Ca. 5 h lake; surrounded by peatland complex. Elev. 710 m.
T59N R4W S11 SW
Datum: NAD 27. Uncertainty: 800 meters. Coordinate Source: TRS2LL.
Ca. 5 h lake surrounded by peatland compex. Floating Sphagnum mat immediately surrounding the lake dominated by Carex lasiocarpa, C rostrata, Menyanthes trifoliata, and Kalmia microphylla. Extensive shrub carr surrounding floating mat dominated by Betula glandulosa and Spiraea douglasii. Littoral regions of the lake characterized by rhizomatous stands of several aquatic macrophytes including Potamogeton amplifolius, Nuphar polysepalum in water 1 dm -2 m deep. Shrub carr distrurbed, particularly on the N side due to draining activities, although floating mat remains relatively undisturbed. Surrounding forest mixed w/ Pinus contorta, Tsuga heterophylla, Picea engelmanii, Larix occidentalis, Pinus monticola, and Thuja plicata, being prominent. Water chem.: pH 7.4, hardness (mg/L) 21, conductivity 45 mmhos, Ca 6.4, Mg 1.3, K 0.8 (all mg/L). Substrate moist to saturated. Abundance: dominant on upland side of floating mat w/ C. rostrata and K. microphylla extending back toward upland forest forming an extensive shrub carr w/ S. douglasii and Calamagrostis canadensis. Shrub 1.5- almost 2 m high. Phenology: Fruits.

R. Bursik 1042, May 18, 1988
With M. Mancuso
ID, Accession: 102757, Barcode: ID077780