]> NEBC barcode-00549401 United States of America Massachusetts Boston Basin Ecoregion: Mystic River Watershed. Middlesex Fells Reservation, on south mid-slope of Pine Hill, GPS 42°25.916'N, 71°6.317'W Eupatorium sessilifolium Linnaeus Linnaeus 2015-06-05 09:08:53 W. T. Kittredge