]> GH barcode-01746015 United States of America Michigan Margins of Sweet Gale Lake near Duck Island Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-16 14:25:43 R. McVaugh