United States, California, Madera, Swamp Lake (ca. 0.3 mi W of Gravelly Ford), Yosemite National Park, South Fork Merced River drainage
37.5475 -119.454722
TRS: 04S23E
2286 meters
7500 ft
seasonally inundated, humic soil margin of lake, in sedge zone bordered by Ledum glandulosum thickets then Pinus contorta murrayana forest, on granitic substrate.