Nuphar polysepala Engelm.
Annotated by Tyson Kemper, 25 Sep 2003.

Idaho: Bonner County: Panhandle National Forest, Hager Lake, privately owned, ca. 2 mi N of Priest Lake Ranger Station off Hwy 57. Elev. 2420 ft.
48.597018° N, 116.971307° W,
Datum: WGS 84. Uncertainty: 587 meters. Coordinate Source: GeoLocate.
1.5 hectare kettle lake surrounded on S side by 0.5 h floating mat dominated by Carex lasiocarpa, C. Rostrata, Kalmia microphylla, Vaccinium oxycoccos, Drosera anglica, and D. rotundifolio, which is bordered 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 shrub Spiraea douglasii. This zone is surrounded by trees of Amelanchier alnifolia and Crategus doulgasii w/ Agrostis stolonifera and Calamagrostis canadensis in the understory. Extensive fen to N of the lake characterized by Carex vesicaria, Salix spp. and scattered pathces of Pinus monticola. Surrounding forest mixed with Pipo, Pico, Psme, Thpl, Pimo, and Abgr. Water chem: pH 6.9, conductivity 20 mmhos, hardness 9.2, Ca 2.5, Mg 0.6, K 0.9, alkalinity 6.5 (all mg/L). Abundance: prominent in water to 1.5 m deep in littoral regions around lake w/ floating and emergent lvs. Sepals yellow. Phenology: Flowers.

R. Bursik 1430, Jul 31, 1988
With F. Rabe
ID, Accession: 99408, Barcode: ID005268