Nuttall, T. (1818), The Genera of North American Plants 2: 242 [tax. nov.]

• Type: Udora canadensis Nutt.

Mueller, F.J.H. von (13 May 1889), Systematic Census of Australian Plants Suppl. 4: 4 [taxonomic synonym]

taxonomic synonym of: Elodea Michx. legitimate

Brummitt, R.K. (1992), Vascular Plant Families and Genera: 443 [taxonomic synonym]

taxonomic synonym of: Elodea Michx. legitimate

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