]> GH barcode-01695973 United States of America Arizona Crater Lake north of Mt. Agassiz Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-25 16:08:35 J. G. Lemmon