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Lake Oswego, Oregon, USA
latitude: 45.416599
longitude: -122.691101
Precision of location: Gauged from chart or map
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Dugesia tigrina | 1963 or earlier | water-lily leaves in a boggy inlet on the north side of Lake Oswego. Dr. Eugene Kozloff and his student Donald Hunter provided the specimens. |