Nuphar × spenneriana

Nuphar × spenneriana
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Order: Nymphaeales
Family: Nymphaeaceae
Genus: Nuphar
Species:
N. × spenneriana
Binomial name
Nuphar × spenneriana
Gaudin[1]
Synonyms[1]
List
  • Nuphar pumila subsp. spenneriana (Gaudin) Nyman
  • Nuphar pumila var. spenneriana (Gaudin) Rouy & Foucaud
  • Nuphar × intermedia Ledeb.
  • Nuphar × intermedia f. chlorocephala Fr.Römer
  • Nymphaea × intermedia (Ledeb.) Weiker ex Rchb.
  • Nymphaea × intermedia var. hirtella J.Schust.
  • Nymphaea × intermedia var. media J.Schust.
  • Nymphaea × intermedia var. polypetala J.Schust.
  • Nymphaea × intermedia var. sublutea J.Schust.
  • Nymphozanthus × intermedius (Ledeb.) Fernald

Nuphar × spenneriana is a species of rhizomatous aquatic plant native to Europe. It is a natural hybrid of Nuphar lutea and Nuphar pumila.[1]

The parent species of the natural hybrid Nuphar × spenneriana Gaudin
Nuphar pumila (Timm) DC.
Nuphar lutea (L.) Sm.

Description

Vegetative characteristics

Nuphar × spenneriana is a perennial, rhizomatous, aquatic plant.[2] The abaxial leaf surface has trichomes towards the leaf margin.[3] The leaf has 15-22 primary nerves.[4]

Generative characteristics

The androecium consists of 60-100 stamens.[4] The stigmatic disc has 9-15 rays.[3]

Cytology

The chromosome count is 2n = 34.[5]

Reproduction

Generative reproduction

It is fertile, but the pollen may be less viable.[6][7] Pollen fertility can reach 73%. However, it can also be as low as 14% in F1 hybrids.[7] In another case, a female sterility rate of 80%, and a male sterility rate of 85% have been reported.[8] The seeds grow more rapidly than those of the parent species.[6][8]

Taxonomy

Publication

It was first described by Jean François Aimé Théophile Philippe Gaudin in 1828.[1]

Natural hybridisation

It likely arose 10 000 years ago, when both parent species came into contact.[9] Natural hybridisation is a threat to Nuphar pumila, one of the parent species, as the hybrid replaces populations of Nuphar pumila.[6] In Eastern Europe and Asia observations of intermediate plants are rare. In Western Europe hybridisation appears to have played a more significant role.[7]

Etymology

The nothospecific epithet spenneriana honours Fridolin Carl Leopold Spenner (1798-1841).[10][11]

Ecology

Habitat

It occurs in rivers, lakes, streams, and pools.[8][2]

References

  1. ^ a b c d "Nuphar × spenneriana Gaudin". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 19 January 2024.
  2. ^ a b Stroh, P. A., Walker, K. J., Humphrey, T. A., Pescott, O. L., Burkmar, R. J. (2023). "Plant Atlas 2020: Mapping Changes in the Distribution of the British and Irish Flora." p. 109. Vereinigtes Königreich: Princeton University Press.
  3. ^ a b Schou, J. C., Moeslund, B., Weyer, K. v. d., Wiegleb, G., Lansdown, R. V., Holm, P., Baastrup-Spohr, L., Sand-Jensen, K. (2023). "Aquatic Plants of Northern and Central Europe Including Britain and Ireland." p. 74. USA: Princeton University Press.
  4. ^ a b Müller, F., Ritz, C. M., Wesche, K., & Welk, E. (2021). Rothmaler - Exkursionsflora von Deutschland. Gefäßpflanzen: Grundband (22nd ed.). p. 131. Springer Spektrum.
  5. ^ Pellicer, J., Kelly, L. J., Magdalena, C., & Leitch, I. J. (2013). Insights into the dynamics of genome size and chromosome evolution in the early diverging angiosperm lineage Nymphaeales (water lilies). Genome, 56(8), 437-449.
  6. ^ a b c Kozlowski, G., & Eggenberg, S. (2005). "Vorkommen der Kleinen Teichrose Nuphar pumila und des Hybrids N. x intermedia in der Schweiz." Botanica Helvetica, 115, 125-136.
  7. ^ a b c Volkova, P. A., Arutyunyan, N. G., Schanzer, I. A., Chemeris, E. V., & Bobrov, A. A. (2018). "Genetic variability of Eurasian Nuphar species unravels possible routes in which freshwater plants could fill their wide areas." Aquatic Botany, 145, 49-57.
  8. ^ a b c Preston, C. D., Croft, J. M. (2022). "Aquatic Plants in Britain and Ireland." p. 40 Niederlande: Brill.
  9. ^ Vallejo‐Marín, M., & Hiscock, S. J. (2016). "Hybridization and hybrid speciation under global change." New Phytologist, 211(4), 1170-1187.
  10. ^ "Allgemeine deutsche biographie." (1893). p. 123. (n.p.): Duncker und Humblot.
  11. ^ Bayerische Staatsbibliothek. (n.d.). Deutsche biographie - Spenner, Fridolin Karl Leopold. Retrieved January 26, 2024, from https://www.deutsche-biographie.de/sfz80689.html