Nymphaea × daubenyana

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Nymphaea × daubenyana
Nymphaea × daubenyana cultivated at the Brooklyn Botanic Garden, New York, USA
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Order: Nymphaeales
Family: Nymphaeaceae
Genus: Nymphaea
Species:
N. × daubenyana
Binomial name
Nymphaea × daubenyana
W.T.Baxter ex Daubeny[1]
It is endemic to Chad, but has been introduced to Florida, USA[1]
Synonyms[1]
  • Nymphaea × daubeniana O.Thomas

Nymphaea × daubenyana is a species of waterlily endemic to Chad, but has been introduced to Florida, USA. It is a natural hybrid of Nymphaea micrantha and Nymphaea nouchali var. caerulea.[1]

Description[edit]

Parent species of the natural hybrid
Nymphaea × daubenyana W.T.Baxter ex Daubeny
Nymphaea micrantha Guill. & Perr.
Nymphaea nouchali var. caerulea (Savigny) Verdc.

Vegetative characteristics[edit]

It has a tuberous rhizome. The cordate, elliptical-roundish, 30 cm wide leaves have an entire margin. The adaxial surface is coloured brightly green with red marks. The abaxial leaf surface is pale - brownish red. Proliferating tissue is found on the leaf blade above the attachment point of the petiole.[2][3]

Generative characteristics[edit]

The blue flowers are 10 cm wide. The narrow petals have an acute apex.[3][2] The ovules are bitegmic and anatropous.[4] The flowers are fragrant.[5][6][7]

Cytology[edit]

A chromosome count of 89 or 87 chromosomes has been reported.[8] The diploid chromosome count has also been reported to be 2n = 42.[9]

Reproduction[edit]

Vegetative reproduction[edit]

Vegetative reproduction through foliar proliferation occurs in Nymphaea × daubenyana.[3][10][11]

Taxonomy[edit]

Publication[edit]

It was first named by W.T.Baxter, but only later validly published by Charles Giles Bridle Daubeny (1795-1867) in 1864.[1]

Placement within Nymphaea[edit]

It is placed in Nymphaea subgenus Brachyceras.[12]

Etymology[edit]

It is named after Professor Charles Giles Bridle Daubeny.

Cultivation[edit]

Nymphaea × daubenyana cultivated in India

It is suited for cultivation in small ponds, containers, and aquaria.[13][14][6][15] It is a fast growing and floriferous species.[6] Despite being a tropical waterlily, it is relatively cold-tolerant.[16]

References[edit]

  1. ^ a b c d e "Nymphaea × daubenyana W.T.Baxter ex Daubeny". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 28 December 2023.
  2. ^ a b Nymphaea in Flora of North America @ efloras.org. (n.d.). Retrieved December 28, 2023, from http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=122531
  3. ^ a b c De Thabrew, W. V. (2014). "A Manual of Water Plants." pp. 181-182. USA: AuthorHouse.
  4. ^ Kraehmer, H. (2019). "Grasses: Crops, Competitors, and Ornamentals." p. 95. John Wiley & Sons.
  5. ^ Niklitschek, A. (1955). "Vom Zimmergarten der Zukunft: neue Tatsachen und Probleme." p. 190. Deutschland: Bruckmann.
  6. ^ a b c "Illustrirte Garten-Zeitung." p. 21. (1883). Deutschland: (n.p.).
  7. ^ Rodd, T., Bryant, G., & Barnard, L. (2007). "The plant finder: The Right Plants for Every Garden." p. 521. Richmond Hill, Ont. : Firefly Books.
  8. ^ Tischler, G. F. L. (1953). "Allgemeine Pflanzenkaryologie: Ergänzungsband: Angewandte Pflanzenkaryologie." p. 445. Deutschland: Gebr. Borntraeger.
  9. ^ Hossain, A., Kabir, G., Ud-deen, M. M., & Alam, A. M. S. (2007). "Cytological studies of Nymphaea species available in Bangladesh." Journal of Bio-Science, 15, 7-13.
  10. ^ Labarre, E. J. (1935). “Viviparous” Succulents. The Cactus Journal, 4(2), 36–37. http://www.jstor.org/stable/42784943
  11. ^ Schmucker, Th. (1932). PHYSIOLOGISCHE UND ÖKOLOGISCHE UNTERSUCHUNGEN AN BLÜTEN TROPISCHER NYMPHAEA-ARTEN. Zeitschrift Für Wissenschaftliche Biologie. Abteilung E. Planta, 16(2), 376–412. http://www.jstor.org/stable/23841796
  12. ^ Weidlich, W. H. (1976). The Organization of the Vascular System in the Stems of the Nymphaeaceae. II. Nymphaea Subgenera Anecphya, Lotos, and Brachyceras. American Journal of Botany, 63(10), 1365–1379. https://doi.org/10.2307/2441845
  13. ^ Böswirth, D., Thinschmidt, A. (2019). "Miniwassergärten (Mein Garten): Gestalten Pflanzen Pflegen." p. 72. Deutschland: Franckh-Kosmos Verlags-GmbH & Company KG.
  14. ^ Heß, T. (2021). "Kosmos Gartenjahr 2022: Der praktische Arbeitskalender mit Aussaattagen." p. 84. Deutschland: Franckh-Kosmos Verlags-GmbH & Company KG.
  15. ^ Nymphaea × daubenyana. (n.d.). Flowgrow. Retrieved December 28, 2023, from https://www.flowgrow.de/db/aquaticplants/nymphaea-daubenyana#:~:text=Nymphaea%20x%20daubenyana%20is%20a%20cultivated%20hybrid%20of,basis%2C%20which%20makes%20this%20Nymphaea%20easy%20to%20propagate.
  16. ^ Nymphaea “Daubeniana” (Dauben, daubeniana). (n.d.). North Carolina Extension Gardener Plant Toolbox. Retrieved December 28, 2023, from https://plants.ces.ncsu.edu/plants/nymphaea-daubeniana/
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