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Fern Spring, Yosemite National Park, Mariposa County, California, USA
on road connecting State Roads 140 and 41.
latitude: 37.715199
longitude: -119.665703
Precision of location: Alexandria Digital Library (with USGS GNIS data)
Site Named Here: By name of site (or city, etc.)
| Polycelis sierrensis | Jul 3, 1967 | Limnocrene with considerable water flow and several seepage springs above it; water temperature 6.4 and 6.8 degrees C., pH 6.1 and 6.2; several specimens under stones, one of them mature, one with regeneration head. | ||
| Polycelis sierrensis | Jul 5, 1967 | temperature 7.3 degrees C., 17 specimens of various sizes, 2 mature. |