]> NEBC barcode-00872122 United States of America Massachusetts Boston Basin Ecoregion: Mystic River Watershed. Middlesex Fells Reservation, east of Hemlock Pool Path, north of gate 54, GPS 42.4567N, 71.0864W Caltha palustris Linnaeus Linnaeus 2016-12-19 16:45:38 W. T. Kittredge