]> NEBC barcode-00872494 United States of America Massachusetts Mystic River Watershed, Middlesex Fells Reservation, Sheepfold meadow, bottom of slope on west side, GPS 42°27.302’N, 71°6.541’W Persicaria hydropiper (Linnaeus) Spach (Linnaeus) Spach 2017-03-27 13:28:57 W. T. Kittredge