]> GH barcode-00872950 United States of America Massachusetts at Watts' ["Horatio C. Watts (1827-1899). Watts lived on the north side of Lexington Road near where the Cambridge Turnpike joins it. His potato field would have been between Lexington Road and the Turnpike." fide R. L. Angelo, Dec. 10, 2018] Persicaria lapathifolia (Linnaeus) Delarbre (Linnaeus) Delarbre 2018-12-11 13:02:49 H. D. Thoreau