]> GH barcode-01746061 United States of America New York Thompson Lake, Helderberg Mountains Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2020-08-26 08:12:17 W. L. C. Muenscher & R. T. Clausen