Ellisia is a genus of flowering plants in the family Hydrophyllaceae, containing the sole species Ellisia nyctelea. It is native to North America, where it is also known as Aunt Lucy, false baby blue eyes, and waterpod. The genus was named in honor of British naturalist John Ellis, a contemporary of, and correspondent to, Carl Linnaeus. It was published and described by Linnaeus, in his book Species Plantarum ed.2 on page 1662 in 1763.

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