Nuphar × spenneriana

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.

Nuphar × spenneriana
Scientific 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

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]

Reproduction

Generative reproduction

It is fertile, but the pollen may be less viable.[5][6] Pollen fertility can reach 73%. However, it can also be as low as 14% in F1 hybrids.[6] In another case, a female sterility rate of 80%, and a male sterility rate of 85% have been reported.[7] The seeds grow more rapidly than those of the parent species.[5][7]

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.[8] Natural hybridisation is a threat to Nuphar pumila, one of the parent species, as the hybrid replaces populations of Nuphar pumila.[5] In Eastern Europe and Asia observations of intermediate plants are rare. In Western Europe hybridisation appears to have played a more significant role.[6]

Etymology

The nothospecific epithet spenneriana honours Fridolin Carl Leopold Spenner (1798-1841).[9][10]

Ecology

Habitat

It occurs in rivers, lakes, streams, and pools.[7][2]

References
  1. "Nuphar × spenneriana Gaudin". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 19 January 2024.
  2. 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. 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. Müller, F., Ritz, C. M., Wesche, K., & Welk, E. (2021). Rothmaler - Exkursionsflora von Deutschland. Gefäßpflanzen: Grundband (22nd ed.). p. 131. Springer Spektrum.
  5. 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.
  6. 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.
  7. Preston, C. D., Croft, J. M. (2022). "Aquatic Plants in Britain and Ireland." p. 40 Niederlande: Brill.
  8. Vallejo‐Marín, M., & Hiscock, S. J. (2016). "Hybridization and hybrid speciation under global change." New Phytologist, 211(4), 1170-1187.
  9. "Allgemeine deutsche biographie." (1893). p. 123. (n.p.): Duncker und Humblot.
  10. Bayerische Staatsbibliothek. (n.d.). Deutsche biographie - Spenner, Fridolin Karl Leopold. Retrieved January 26, 2024, from https://www.deutsche-biographie.de/sfz80689.html
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.