| Grandma Lake Wetlands State Natural Area | |
|---|---|
 Grandma Lake Wetlands | |
  Location of Grandma Lake Wetlands State Natural Area in Wisconsin  Grandma Lake Wetlands State Natural Area (the United States) | |
| Location | Florence, Wisconsin, United States |
| Coordinates | 45°49′1″N 88°36′47″W / 45.81694°N 88.61306°W |
| Area | 495 acres (200 ha) |
| Established | 1996 |
Grandma Lake Wetlands State Natural Area is a Wisconsin Department of Natural Resources-designated State Natural Area featuring the undeveloped, pristine 44-acre Grandma Lake, which lies in a depression formed during the last glacial period. The lake is ringed by a large, open sphagnum bog mat. The bog mat is surrounded by a coniferous swamp of tamarack (Larix laricina) and black spruce (Picea mariana). The bog mat supports a plant community that is considered diverse and unusual, with several rare species present, including: bog arrow-grass (Triglochin maritima), dragon's mouth orchid (Arethusa bulbosa), livid sedge (Carex livida), small-headed bog sedge (Carex tenuiflora), as well as one of only a few known populations of bog rush (Juncus stygius) in the State of Wisconsin. In 1991, the US Forest Service designated the site as a Research Natural Area. Also, the site is listed as one of Wisconsin's Wetland Gems, by the Wisconsin Wetlands Association.[1][2][3]
- ^ Fouse, Fred. "Establishment Record for Grandma Lake Wetlands Research Natural Area within the Nicolet National Forest, Florence County, Wisconsin" (PDF).
- ^ Wisconsin Department of Natural Resources. "Grandma Lake Wetlands State Natural Area". Retrieved 2013-11-29.
- ^ Wisconsin Wetlands Association. "100 Wetland Gems". Retrieved 2013-11-29.