Please take the time to read the actual description of Tricker's 1915 Catalog, and Mrs. Woodrow Wilson was offered for $ 5.00 and Panama Pacific for $ 10.00 each:

Mrs. Woodrow Wilson Water Lily. A hybrid of Daubenyana. A strong and vigorous grower, of free and continuous-blooming habit, and excellent for winter blooming in the conservatory. The flower is of lovely shade of light blue, stamens yellow, tipped blue. This variety was awarded a Silver Medal by the Philadelphia Horticultural Society, November 3, 1914; also certificated by the Horticultural Societies of New York, Lake Geneva, Wis., and Chicago, Ill. (See illustration front cover).

Panama-Pacific Water Lily. A new, ever blooming, viviparous variety, and one of the most desirable of the late introductions. A strong grower and free-flowering. The buds are bronzy-green, marked and spotted reddish-brown; on opening the petals are a rich, deep rosy-red, very pronounced when in full sun; the same color is diffused on the overlapping sepals. When fully opened, the flower is a rich reddish-purple, with yellow stamens, a unique and distinct color in Water-Lilies. Will bloom freely in the conservatory during the winter. (see illustration front cover).