]> GH barcode-01695970 United States of America Alaska Grayling Lake, milepost 150.3 Dalton Highway, 25 miles south of Coldfoot [See map on label] Potamogeton pusillus subsp. tenuissimus (Mertens & Koch) R. R. Haynes & Hellquist (Mertens & Koch) R. R. Haynes & Hellquist 2023-04-13 09:35:47 C. B. Hellquist