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词条 Nymphaea lotus f. thermalis
释义

  1. Description

  2. Habitat

  3. References

{{DISPLAYTITLE:Nymphaea lotus f. thermalis}}{{taxobox
|name = Nymphaea lotus f. thermalis
|image =
|regnum = Plantae
|unranked_divisio = Angiosperms
|ordo = Nymphaeales
|familia = Nymphaeaceae
|genus = Nymphaea
|species = N. lotus
|forma = N. l. f. thermalis
|trinomial = Nymphaea lotus f. thermalis
|trinomial_authority = (DC.) Tuzson
}}Nymphaea lotus f. thermalis (sometimes referred to as Nymphaea lotus var. thermalis)[1] is a form of Nymphaea lotus (commonly called the tiger lotus, white lotus or Egyptian white water-lily) in the genus Nymphaea.[2] Whilst some authorities list Nymphaea lotus f. thermalis as being synonymous with N. lotus,[3] others list it as a distinct taxon[4][5] – further investigation is required to determine its precise classification.[6] The usual habitat for Nymphaea lotus is the Nile Delta, hence Nymphaea lotus f. thermaliss Romanian habitat is unusual.[6]

Description

Nymphaea lotus f. thermalis is a water lily which blooms at night[6] – its flowers last four days and have four sepals, 19–20 white petals along with yellow anthers and stamens.[7] There is usually a 15–30 cm gap between flowers and the surface of the water, flowers are slightly fragrant; the round leaves of the plant are 20–50 cm wide.[7] A description was first formally published in Math. Természettud. Értes. 25(4):32, 36. 1907.[2]

Habitat

Nymphaea lotus f. thermalis is endemic to the thermal water of the Peţa River, Sânmartin, Bihor County, Romania.[6] The area is protected as a nature reserve (51.0 hectares (126 acres) in size) and consists of a rivulet along with three ponds. The water has a roughly constant temperature of around 30 °C whilst the site has an average air temperature of 10–11 °C.[6] The thermal waters have been recorded as early as 1211, but it was only in 1799 that the first record of N. lotus was made, by Pál Kitaibel.[6][8] Janos Tuzson proposed in 1907 that this population's unusual location could be explained by the persistent heat provided by the thermal springs could have sustained the population at a pre-ice age time when the plant would have been spreading across the warmer regions of Europe; this theory was corroborated by additional evidence provided by the identification of other endemic species.[6][9] Alexandru Borza was the Government minister in charge of education (and also a botanist) who made the first push for legal protection and recognition of Nymphaea lotus f. thermalis – in 1932, the Cabinet of Romania declared the rivulet a nature reserve and the plant a "national monument".[6] Conservation action with the intent to preserve this population has been undertaken for many years (since at least 1940) – including the management of invasive species – and the plant has been included in recent water management legislation.[6]

Whilst not held in any Romanian botanical gardens, Nymphaea lotus f. thermalis is grown at Royal Botanic Gardens Kew and at the botanic garden of Bonn University.[6]

References

1. ^{{cite web|url=http://eol.org/pages/5472837/names/synonyms|title=Synonyms of Nymphaea lotus f. thermalis|website=Encyclopedia of Life|accessdate=9 August 2014|archiveurl=https://www.webcitation.org/6Rh9GPlUJ|archivedate=9 August 2014}}
2. ^{{cite web|url=https://www.gbif.org/species/4940234|title=Nymphaea lotus f. thermalis|website=GBIF Backbone Taxonomy|publisher=GBIF|accessdate=9 August 2014|archiveurl=https://www.webcitation.org/6Rh9LaDN5|archivedate=9 August 2014}}
3. ^{{GRIN | Nymphaea lotus f. thermalis | 415837 | accessdate=9 August 2014}}
4. ^{{cite web|url=http://eol.org/pages/5472837/overview|title=Nymphaea lotus f. thermalis|website=Encyclopedia of Life|accessdate=9 August 2014}}
5. ^{{cite web|url=https://www.uniprot.org/taxonomy/568248|title=FORMA Nymphaea lotus f. thermalis|website=UniProt|accessdate=9 August 2014}}
6. ^{{cite journal|last=Veler|first=Ana|date=November 2008|title=Nymphaea lotus up north, naturally|journal=Water Gardeners International|volume=3|issue=4|url=http://www.watergardenersinternational.org/journal/3-4/ana/page1.html|accessdate=9 August 2014}}
7. ^{{cite web|url=http://eol.org/data_objects/15632673|title=Brief Summary of Nymphaea lotus L|last=Courteau|first=Jacqueline|publisher=Encyclopedia of Life|accessdate=9 August 2014}}
8. ^{{cite journal|author=Waldstein, F. De Paula Adam Graf Von & P. Kitaibel|year=1799|title=Descriptiones et icones plantarum rariorum Hungariae|location=Vienna|url=http://bibdigital.rjb.csic.es/ing/Volumenes.php?Libro=1667}}
9. ^{{cite journal|last=Tuzson|first=János|year=1907|title=A Nymphaea lotus csoport morfologiája és rendszertani tagolódása|url=http://www.odrportal.hu/web/guest/record/-/record/MOKKAI0008585270|language=Hungarian}}
{{Taxonbar|from=Q310507}}

3 : Nymphaea|Endemic flora of Romania|Forma taxa

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