⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-22600083, with some changes.
This name is a synonym of Nuphar lutea subsp. polysepala (Engelm.) E.O. Beal.
The record derives from Tropicos which reports it as a synonym (record 22600083) with original publication details: Trans. Acad. Sci. St. Louis 2: 282 282 1865.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:1021676-2.