Isoetes occidentalis L.F. Hend.
Annotated by C.R. Bjork, May 2002.

Idaho: Kootenai County: Coeur d'Alene River Wildlife Mgt. Area/Pvt; Rose Lake Fen; 2 mi N of town of Rose Lake, ID, just S. of Idaho Fish and Game boat launch on the E side of Rose Lake. Elev. 653 ft.
T49N R01W S33
Datum: NAD 27. Uncertainty: 800 meters. Coordinate Source: TRS2LL.
Fen habitats ranging from rich to poor. Rich ferns dominated by Potentilla palustris, Sparganium eurycarpum, Sagittaria latifolia, Eleocharis palustris, Glyceria borealis, Carex utriculata, C. Vesicaria, Typha latifolia, Sphagnum teres. Poor fen dominated by Sphagnum centrale, S. angustifolium, Carex lasiocarpa, C. Limosa, Spiraea douglasii. Shallow lake littoral zones dominated by Nuphar polysepalum, Brasenia schreberi; deep littoral zones by Potamogeton amplifolius, P. zosteriformis, P. praelongus, Myriophyllum sibericum, Elodea canadensis. Abundance: few, scattered on cobbley substrate in water less than 0.5 m deep. Phenology: Uncertain.

Robert Bursik 1654, Sep 5, 1988
With Fred Rabe
ID, Accession: 110914, Barcode: ID000533