]> GH barcode-01746011 United States of America Michigan pool E of I pool, Seney National Wildlife Refuge, S of Seney Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-16 19:13:52 C. B. Hellquist & R. R. Haynes