Two noble Ninth American plants well deserve naturalisation in our waters, associated with our own beautiful white and yellow water lilies - the large Nuphar advena, which thrusts its great leaves well out of the water in many parts of North America, and the sweet-scented Nymphaea odorata, which floats in crowds on many of the pine-bordered lakes and lakelets of New England, to a non-botanical observer seeming very like our own water lily.