Nymphaea

Nymphaea
Nymphaea 'Peach Glow'
Scientific classification
Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Magnoliopsida
Order:	Nymphaeales
Family:	Nymphaeaceae
Genus:	Nymphaea L.
Species
About 50 species, including: Nymphaea alba - European White Water-lily Nymphaea amazonum Nymphaea ampla Nymphaea blanda Nymphaea caerulea - Egyptian Blue Water-lily Nymphaea calliantha Nymphaea candida Nymphaea capensis - Cape Blue Water-lily Nymphaea citrina Nymphaea colorata Nymphaea elegans Nymphaea fennica Nymphaea flavovirens Nymphaea gardneriana Nymphaea gigantea - Australian Water-lily Nymphaea heudelotii Nymphaea jamesoniana Nymphaea leibergii - Dwarf Water-lily Nymphaea lotus - Egyptian White Water-lily Nymphaea lotus var. termalis Nymphaea macrosperma - Native to Australia's Top End Nymphaea mexicana - Yellow Water-lily Nymphaea micrantha Nymphaea nouchali - Red and blue water lily (National flower of Sri Lanka) Nymphaea odorata - Fragrant Water-lily Nymphaea pubescens - Hairy water lily (National flower of Bangladesh) Nymphaea rubra - India Red Water-lily Nymphaea rudgeana Nymphaea stuhlmannii Nymphaea sulfurea Nymphaea tetragona - Pygmy Water-lily

Nymphaea (pronounced /nɪmˈfiː.ə/) is a genus of aquatic plants in the family Nymphaeaceae. There are about 50 species in the genus, which has a cosmopolitan distribution.

Name

The common name, shared with some other genera in the same family, is Water Lily.

The name Nymphaea comes from the Greek term "Νυμφαία", possibly related to "Νύμφη" meaning "nymph". The nymphs in Greek mythology were supernatural feminine beings associated with springs, so the application of the name to delicately flowered aquatic plants is understandable.

Description

Nymphaea leaves have a radial notch from the circumference to the petiole (leaf stem) in the center.

Classification

Despite their name, water-lilies are not related to the true lilies (family Liliaceae). The name "lily" is applied to a number of plants that are not at all closely related, such as day lilies, spider lilies and arum lilies, in addition to the water lilies. Nymphaea (Egyptian lotuses) are also not related to the Chinese and Indian lotus of genus Nelumbo, which are used in Asian cooking and sacred to Hinduism and Buddhism.

However, the genus Nymphaea is closely related to Nuphar, another genus commonly called "lotus". In Nymphaea, the flower petals are much larger than the sepals, whereeas in Nuphar the petals are much smaller than its sepals. The fruit maturation also differs, with Nymphaea fruit sinking below the water level immediately after the flower closes, whereas Nuphar fruit are held above water level to maturity. Both genera share leaves with a radial notch from the circumference to the petiole (leaf stem) in the center.

Cultural significance

Blue lotus symbol (Nymphaea caerulea) among other ancient Egyptian symbols on an 18th Dynasty jar. Found at Amarna in the 19th century.

The ancient Egyptians revered the Nile water-lilies, or lotuses as they were also called. The lotus motif is a frequent feature of temple column architecture.

The Egyptian Blue Water-lily, N. caerulea, opens its flowers in the morning and then sinks beneath the water at dusk, while the Egyptian White Water-lily, N. lotus, flowers at night and closes in the morning. This symbolizes the Egyptian separation of deities and is a motif associated with Egyptian beliefs concerning death and the afterlife. The recent discovery of psychedelic properties of the blue lotus may also have been known to the Egyptians and explain its ceremonial role. Remains of both flowers have been found in the burial tomb of Ramesses II.

The French painter Claude Monet is famous for his paintings of water lilies.

Cultivation

Many of the water-lilies familiar in water gardening are hybrids.

Taxonomy

Nymphaea nouchali in Hyderabad, India.

Subdivisions of genus Nymphaea:^[1]

Subgenus:

Anecphya

Brachyceras

Hydrocallis

Lotos

Nymphaea:

Nymphaea Chamaenymphaea

Nymphaea Nymphaea

Nymphaea Xanthantha

Gallery

Nymphaea nouchali in Hyderabad, India.	Nypmhaea alba	Black Princess waterlily. Nypmhaea alba variety	Nypmhaea alba	Nypmhaea alba
Blue and red waterlily Nypmhaea stellata	Nymphaea caerulea subsp. zanzibarensis	Nymphaea nouchali in Hyderabad, India.	Nymphaea nouchali in Hyderabad, India.

References

• Perry D. Slocum: Waterlilies and Lotuses. Timber Press 2005, ISBN 0881926841 (restricted online version at Google Books)

External links

• Nymphaea Hybrids
• Kit Notts, "The first hybrid waterlilies"
• Species of Nymphaea subgenus Hydrocallis (species as recognized by GRIN)

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