]> GH barcode-01746000 United States of America Michigan Grass Lake at SE corner ca. 19.2 km NE of Gaylord, Sect. 3, T32N, R1W Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-16 11:44:59 C. B. Hellquist & R. R. Haynes