]> GH barcode-01746004 United States of America Michigan S side of Rt. M123, 1.3 km NE of Auger Creek, Sect. 19, T47N, R9W Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-16 11:48:34 C. B. Hellquist & R. R. Haynes