]> GH barcode-01746064 United States of America New York North bank of Black River, below pulp mill, by Madrid Dock, Dexter Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2020-08-26 08:16:37 W. L. C. Muenscher & B. Maguire