]> GH barcode-01746125 United States of America Virginia by Chickahominy River, at "Shady Rest", southeast of Windsor Shades (Boulevard Postoffice) Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-03-22 16:01:13 M. L. Fernald & B. H. Long