Fig. 175. <i><a href="//commons.wikimedia.org/w/index.php?title=Potamogeton_oakesianus&amp;action=edit&amp;redlink=1" class="new" title="Potamogeton oakesianus (page does not exist)">Potamogeton oakesianus</a></i> from the second edition of <i><a href="//commons.wikimedia.org/wiki/Britton_%26_Brown,_Illustrated_Flora,_Second_Edition" title="Britton &amp; Brown, Illustrated Flora, Second Edition">An Illustrated Flora of the Northern United States, Canada and the British Possessions</a></i> (New York, 1913)
Nathaniel Lord Britton &amp; Addison Brown
1913
An Illustrated Flora of the Northern United States, Canada and the British Possessions, 2nd edition (1913)