]> GH barcode-01746123 United States of America Virginia Hog Island Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-03-22 15:53:41 M. L. Fernald & B. H. Long