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half life -size <br />two times <br />life -size <br />CURLY PONDWEED, Potamogeton crispus <br />Fresh inland water and fresh to slightly brackish <br />coastal water; Alberta to Quebec, California, and <br />Florida. This native of the Old World has been in North <br />America for at least 150 years and is still spreading. <br />Leaves have finely- toothed, usually puckered edges. <br />86 <br />