]> NEBC barcode-00549355 United States of America Massachusetts Boston Basin Ecoregion: Mystic River Watershed. Middlesex Fells Reservation, right side of entrance road to South Reservoir, GPS 42 26.379’N, 71 7.318’W Galinsoga quadriradiata Ruiz & Pavon Ruiz & Pavon 2015-05-05 16:21:29 B. T. Hamlin