]> GH barcode-01746010 United States of America Michigan Colwel Lake ca. 14.5 km SE of Shingleton, Sect. 9, T44N, R17W Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-16 19:13:07 C. B. Hellquist & R. R. Haynes