Nymphaea × borealis

Nymphaea × borealis is a species of waterlily native to Sweden, Poland, Germany, the Czech Republic, and East European Russia. It is a natural hybrid of Nymphaea alba and Nymphaea candida.[1][2]

Nymphaea × borealis
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Order: Nymphaeales
Family: Nymphaeaceae
Genus: Nymphaea
Species:
N. × borealis
Binomial name
Nymphaea × borealis
E.G.Camus[1]
Synonyms[1]
  • Nymphaea alba subsp. borealis (E.G.Camus) M.H.J.van der Meer

Description
Parent species of the natural hybrid
Nymphaea × borealis E.G.Camus
Nymphaea alba L.
Nymphaea candida C.Presl

Generative characteristics

The filament is lanceolate. The yellow stigma has a hemispherical, short projection in the centre of the stigma.[2]

Cytology

It exhibits an intermediate genome size.[2]

Reproduction

Generative reproduction

Nymphaea × borealis exhibits lower fertility and pollen production.[2]

Natural hybridisation

Nymphaea × borealis can be formed in areas of sympatric occurrence of the parent species, but the natural hybridisation of both parent species is not very frequent. Genetically confirmed hybrids are a rare occurrence.[2][3]

Taxonomy

Publication

It was first described by Edmond Gustave Camus in 1898.[1]

References
  1. "Nymphaea × borealis E.G.Camus". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 28 December 2023.
  2. Dąbrowska, M., Skubała, K., Volkova, P., Suda, J., & Zalewska-Gałosz, J. (2015). "Genome size and phenotypic variation of Nymphaea (Nymphaeaceae) species from Eastern Europe and temperate Asia." Acta Societatis Botanicorum Poloniae, 84(2).
  3. Kabatova, K., Vit, P., & Suda, J. (2014). "Species boundaries and hybridization in central-European Nymphaea species inferred from genome size and morphometric data." Preslia, 86(2), 131-154.
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