Carex rostrata Stokes
Annotated by Tyson Kemper, 5 May 2004.

Idaho: Bonner County: [locality and coordinates withheld; status in Idaho: S2 (Imperiled; IDNHP)],
Ca. 3 acre kettle lake surrounded on S side by 1 acre floating mat dominated by Carex lasiocarpa, C. rostrata, Kalmia microphylla, Vaccinium oxycoccos, Drosera anglica, and D. rotundifolia, which is surrounded on the upland side by a moist, moss-covered zone w/ K. microphylla, Lycopus uniflorus, Agrostis scabra, and V. oxycoccos which grades into a dense stand of 1.5 m high Spiraea douglasii surrounded by trees of Crategus douglasii, Amelanchier alnifolia, w/ Calamagrostis canadensis and A. stolonifera in the understory. Surrounding forest mixed with Pinus ponderosa, P. contorta, P. monticola, Thuja plicata, Psuedotsuga menziesii, and Abies grandis all well-represented. Water chem: pH 6.9, conductivity 16 mmhos, alkalinity 4 mg/L, Ca 2 mg/L, Mg 0.5 mg/L. Substrate wet Sphagnum. Abundance: prominent, deep rhizomatous sedge growing on mat interior w/ K. microphylla, C. rostrata, and V. oxycoccos. Phenology: Fertile.

R. Bursik 356, Jul 7, 1987
ID, Accession: 96276, Barcode: ID020447