American White Waterlily (Nymphaea odorata Aiton)

Also classified as Nymphaea tuberosa Paine (corresponds to subsp. tuberosa).

Some authorities, including Go Botany, split this taxon into two species, Nymphaea odorata and Nymphaea tuberosa Paine. We follow POWO's scheme, which is used by most other authorities including USDA PLANTS, BONAP, and FNA which treats these as subspecies: Nymphaea odorata subsp. odorata and Nymphaea odorata subsp. tuberosa (Paine) Wiersema & Hellq. Note that an authority using the subspecies scheme will necessarily refer to a broader taxon with the name Nymphaea odorata, whereas an authority splitting them into species will use that name to refer to a narrower taxon.