⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-22600093, with some changes.
This name is a synonym of Nuphar lutea subsp. sagittifolia (Walter) E.O. Beal.
The record derives from Tropicos which reports it as a synonym (record 22600093) with original publication details: Fl. Amer. Sept. 2: 370 370 1814.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:605464-1.