Nymphaea oxypetala
| Nymphaea oxypetala | |
|---|---|
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| Botanical illustration ofNymphaea oxypetala | |
Scientific classification
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Species: | N. oxypetala
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| Binomial name | |
| Nymphaea oxypetala Planch.[1]
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| Synonyms[1] | |
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Nymphaea oxypetalais a species of waterlily native to Bolivia, Brazil, Cuba, Ecuador, Paraguay, and Venezuela.[1]It is a remarkable species with excessively acuminate and acute sepals and petals.[2]
Description
[edit]
Vegetative characteristics
[edit]
Unlike most other waterlilies, this species rarely produces floating leaves. The strongly reduced floating leaves are only produced very rarely.[3]The smaller floating leaves are up to 6 cm large. The purplish-green, submerged, saggitate, membranous leaves are significantly larger with up to 30 cm big leaf blades.[4]The broad submerged leaves display a likeness to the leaves of lettuce.[5]The petioles are fragile and leaves break of easily.[3]
Generative characteristics
[edit]The nocturnal flowers float on the water surface.[3]The stamens are purple. The cream-coloured, 2 cm long carpellary appendages are abruptly folded at the apex.[4]They are the longest carpellary appendages of allNymphaeaspecies.[3]The floral fragrance has been described as ether-like.[6]
Cytology
[edit]The chromosome count of this polyploid species is 6n = 84.[7]
Reproduction
[edit]Vegetative reproduction
[edit]This species is likely not stoloniferous.[6]Proliferating pseudanthia are also lacking inNymphaea oxypetala.[8][9]
Generative reproduction
[edit]Flowering occurs throughout March to August.[4]
Ecology
[edit]Habitat
[edit]It is associated withlotic habitats,[10]These aquatic habitats are defined by the presence of moving water.[11]It occurs in floodplains, river branches and in seasonal streams.[12]In the Pantanal it occurs in the flooding area of the Paraguay River, Nabileque, Abobral and Poconé.[4]In the Bolivian Pantanal,Nymphaea oxypetalawas observed growing at depths of up to 2 m in gaps amid mats of floating vegetation and in localities where human activities prevented the growth of such floating mats along the margins.[3]
Taxonomy
[edit]Type specimen
[edit]The type specimen was collected by W. Jameson in March 1845 in Ecuador near Guayaquil.[6][9]
Placement withinNymphaea
[edit]It is placed withinNymphaeasubg.Hydrocallis.[13]
Etymology
[edit]The specific epithetoxypetalarefers to the pointed petals of this species.[4]
Conservation
[edit]The conservation status in Brazil is not evaluated (NE).[8]
Cultivation
[edit]It is kept as an aquarium plant, as well as in small containers of water.[14]It is intolerant of cold, turbid and saline water and favours clear, slowly flowing freshwater.[6]
References
[edit]- ^abc"Nymphaea oxypetalaPlanch ".Plants of the World Online.Royal Botanic Gardens, Kew.Retrieved12 November2023.
- ^"Flore des Serres et des Jardins de l'Europe 8: 120."1853. (Mar 1853)
- ^abcdeRitter, N. P., Crow, G. E., & Wiersema, J. H. (2001)."Nymphaea (Nymphaeaceae) in Bolivia: notes on several species, three new country records, and a key to species."Rhodora, 103(915), 326-331.
- ^abcdePott, V. J. (1998)."The Nymphaeaceae family in the Pantanal, Mato Grosso and Mato Grosso do Sul, Brazil."Acta Botanica Brasilica, 12, 183-194.
- ^Del Claro, K., Oliveira, P. S., & Rico-Gray, V. (2009). Tropical Biology and Conservation Management - Volume I: Natural History of Tropical Plants. p. 105. EOLSS Publications.https://books.google.com/books?id=oSDXCwAAQBAJ&dq=nymphaea%20oxypetala&pg=PA105
- ^abcdWiersema, J. H. (1987). A monograph ofNymphaeasubgenusHydrocallis(Nymphaeaceae). Systematic Botany Monographs, 1-112.
- ^Loehne, C., Borsch, T., & Wiersema, J. H. (2007)."Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers."Botanical Journal of the Linnean Society, 154(2), 141-163.
- ^abPellegrini, M. O. O. & Jardim Botânico do Rio de Janeiro. (n.d.). Nymphaea oxypetala Planch. Flora E Funga Do Brasil. Retrieved November 24, 2023, fromhttps://floradobrasil.jbrj.gov.br/FB118426
- ^abLima, C. T. de, Machado, I. C., & Giulietti, A. M. (2021)."Nymphaeaceae do Brasil."SITIENTIBUS série Ciências Biológicas, 21.https://doi.org/10.13102/scb4986
- ^Pott, V. J., Pott, A., Lima, L. C. P., Moreira, S. N., & Oliveira, A. K. (2011)."Aquatic macrophyte diversity of the Pantanal wetland and upper basin."Brazilian Journal of Biology, 71, 255-263.
- ^Reinbold, Joan. (2023, November 13). Lentic & Lotic Ecosystems. sciencing.com. Retrieved fromhttps://sciencing.com/lentic-lotic-ecosystems-7355077.html
- ^Damasceno-Junior, G. A., & Pott, A. (2022). Flora and vegetation of the Pantanal Wetland. p. 241. Springer Nature.https://books.google.com/books?id=ZiFnEAAAQBAJ&dq=nymphaea%20oxypetala&pg=PA241
- ^de Andrade Amador, G., Damasceno-Júnior, G. A., da Silva, R. H., Pott, A., & Pott, V. J. (2013)."Nymphaeaceae,Nymphaea belophyllaTrickett: new state record. "Check List, 9(2), 440-442.
- ^Breukel, H. (n.d.).Nymphaea oxypetalaPlanchon. Seerosenforum.de Das Portal Der Seerose. Retrieved November 12, 2023, fromhttps://www.seerosenforum.de/gattung/Hydrocallis/oxypetala/oxypetala.aspx