Nymphaea × sundvikii

Nymphaea × sundvikii is a species of waterlily endemic to Central and East European Russia. It is a natural hybrid of Nymphaea candida and Nymphaea tetragona.

Vegetative characteristics
The leaves are larger than the leaves of Nymphaea tetragona.

Generative characteristics
The flowers show intermediate morphological characteristics, and they are larger than the flowers of Nymphaea tetragona.

Taxonomy
It was first described by Hiitonen in 1933.

Habitat
It is known from aquatic habitats in the region of Tver, Kostroma, and Nizhny Novgorod. It has been observed in a Sphagnum bog in a small lake. It has also been reported to occur in the Kazhim reservoir. The hybrid is usually found in habitats of sympatric occurrence of the two parent species.