]> NEBC barcode-00558782 United States of America Massachusetts Boston Basin Ecoregion: Mystic River Watershed. Middlesex Fells Reservation, Shilly Shally Brook on east side of Fellsway East near gate 52, 8-10 m. from road Alisma subcordatum Pursh Pursh 2014-05-16 09:11:13 B. T. Hamlin