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Piney Branch, Rock Creek Park, Washington, District of Columbia, USA
latitude: 38.935101
longitude: -77.046898
Precision of location: Alexandria Digital Library (with USGS GNIS data)
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Phagocata gracilis | Apr 3, 1936 | stones | Kenk (1970) noted: USNM 20235; locality is now without planarians. |