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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.〔(【引用サイトリンク】 Establishment Record for Grandma Lake Wetlands Research Natural Area within the Nicolet National Forest, Florence County, Wisconsin. )〕〔(【引用サイトリンク】 Grandma Lake Wetlands State Natural Area )〕〔(【引用サイトリンク】 100 Wetland Gems )〕 == Location and access == Grandma Lake Wetlands is located within the Nicolet National Forest, in southwest Florence County, approximately southeast of Long Lake. Access is via a walking trail that leads west from Grandma Lake Road, approximately 0.5 miles south of its intersection with Tie Mill Road. A small, brown breeding bird survey fencepost marks the trailhead. File:GrandmaLake2.jpg|Wide, open bog mat on the northeast side of Grandma Lake File:GrandmaLake3.jpg|Black spruce and tamarack muskeg at the north end of Grandma Lake File:GrandmaLake4.jpg|A close-up of the bog mat, near the northeast shore of Grandma Lake 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Grandma Lake Wetlands State Natural Area」の詳細全文を読む スポンサード リンク
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