Nymphaea × daubenyana
Species of water lily
From Wikipedia, the free encyclopedia
Nymphaea × daubenyana is a species of waterlily endemic to Chad, which has also been introduced to the USA (Florida) and Sri Lanka. It is a natural hybrid of Nymphaea micrantha and Nymphaea nouchali var. caerulea.[1]
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| Nymphaea × daubenyana | |
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| Nymphaea × daubenyana cultivated at the Brooklyn Botanic Garden, New York, USA | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Subgenus: | Nymphaea subg. Brachyceras |
| Species: | N. × daubenyana |
| Binomial name | |
| Nymphaea × daubenyana W.T.Baxter ex Daubeny[1] | |
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| It is endemic to Chad, but has been introduced to Florida, USA[1] | |
| Synonyms[1] | |
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Description
Nymphaea × daubenyana W.T.Baxter ex Daubeny
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Vegetative characteristics
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
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
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
Taxonomy
It was first named by W.T.Baxter, but only later validly published by Charles Giles Bridle Daubeny (1795-1867) in 1864.[1] It is placed in the subgenus Nymphaea subg. Brachyceras.[12]
Etymology
It is named after Professor Charles Giles Bridle Daubeny.[citation needed]
