Nymphaea × borealis
| Nymphaea × borealis | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Section: | Nymphaea sect. Nymphaea |
| Species: | N. × borealis
|
| Binomial name | |
| Nymphaea × borealis E.G.Camus[1]
| |
| Synonyms[1] | |
| |
Nymphaea × borealis is a species of waterlily native to Sweden, Poland, Germany,[1] the Netherlands,[2] the Czech Republic, and East European Russia.[1] It is a natural hybrid of Nymphaea alba and Nymphaea candida.[1][3]
Description
Nymphaea × borealis E.G.Camus
Vegetative characteristics
The primary leaf nervation of the basal lobes is slightly arched.[4]
Generative characteristics
The floral base is tetragonous.[4] The filament is lanceolate.[3] The gynoecium consists of 14–18 carpels.[4] The slightly concave, yellow stigmatic disk[4] has a hemispherical, short projection in the centre.[3]
Cytology
It exhibits an intermediate genome size.[3]
Reproduction
Generative reproduction
Nymphaea × borealis exhibits lower fertility and pollen production.[3]
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.[3][5]
Taxonomy
It was first described by Edmond Gustave Camus in 1898.[1]
Etymology
The hybrid name borealis means north or northern.[6]
Ecology
It is a host plant to the phytopathogenic fungus species Rhamphospora nymphaeae.[7]
References
- ^ a b c d e f "Nymphaea × borealis E.G.Camus". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 28 December 2023.
- ^ Haveman, R., Jager, H., & de Ronde, I. (2018). Een echo uit een koud verleden: het Nymphaeetum candidae Miljan 1958 in Nederland. Stratiotes, 52, 5-31.
- ^ a b c d e f 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).
- ^ a b c d Langbehn, H. (2010). Die Seerosen im Norden des Landkreises Celle. Floristische Notizen aus der Lüneburger Heide, 18, 19-24.
- ^ 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.
- ^ A Grammatical Dictionary of Botanical Latin. (n.d.). Missouri Botanical Garden. Retrieved May 26, 2025, from https://www.mobot.org/mobot/latindict/keyDetail.aspx?keyWord=borealis
- ^ Kruse, J. (n.d.). Rhamphospora nymphaeae. (Obligat) Phytoparasitische Kleinpilze. Mitteleuropa Mit Schwerpunkt Deutschland. Retrieved May 29, 2025, from https://www.phytoparasiten.de/rhamphospora-nymphaeae/