]> GH barcode-01695972 United States of America Arizona Peña Blanca Lake & hillside east of lake Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2021-02-25 16:06:36 E. D. Lehto