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| Nuphar | |
|---|---|
| Name | Nuphar |
| Regnum | Plantae |
| Divisio | Magnoliophyta |
| Classis | Magnoliopsida |
| Ordo | Nymphaeales |
| Familia | Nymphaeaceae |
| Genus | Nuphar |
Nuphar is a genus of aquatic flowering plants in the family Nymphaeaceae, commonly referred to in older literature as spatterdocks or yellow water-lilies. The genus has been studied in botanical works alongside taxa such as Nymphaea, Victoria (plant), Hydrocharis, Nelumbo (plant), and featured in floras produced by institutions like the Royal Botanic Gardens, Kew, Missouri Botanical Garden, and the Smithsonian Institution. Nuphar species appear in ecological surveys by agencies including the United States Fish and Wildlife Service, Environment Canada, and regional herbaria associated with Kew Gardens and the Natural History Museum, London.
Taxonomic treatments of Nuphar have been influenced by authors and institutions such as Carl Linnaeus, George Bentham, Joseph Dalton Hooker, Augustin Pyramus de Candolle, and modern monographs from the Royal Botanic Gardens, Kew and the Missouri Botanical Garden. Phylogenetic analyses using data from laboratories at the Smithsonian Institution, Max Planck Society, and universities like Harvard University, University of California, Berkeley, and University of Toronto place Nuphar within the order Nymphaeales, sister to genera like Nymphaea and Victoria (plant). Molecular work published by researchers affiliated with University of Copenhagen, University of Oslo, and the Royal Botanic Garden Edinburgh uses plastid markers and nuclear sequences similar to studies in Princeton University and University of Oxford to resolve species complexes. Taxonomic databases such as The Plant List, International Plant Names Index, and regional checklists from Flora Europaea and Flora of North America catalog species, varieties, and synonyms.
Species treated in floras by the Royal Botanic Gardens, Kew and descriptions in texts by John Ray exhibit characteristic morphological traits: rhizomatous stems assessed in studies at Kew Gardens and Missouri Botanical Garden, peltate leaves compared with Nymphaea alba specimens in the Natural History Museum, London, and large yellow tepals documented in herbarium collections at the Smithsonian Institution. Floral anatomy has been examined in comparative works from Cambridge University Press authors and researchers at University of Michigan and Stanford University, noting receptacle structure and stamen arrangement analogous to illustrations in plates from the Royal Horticultural Society. Seeds and fruit capsules have been described in monographs associated with Harvard University Herbaria and regional botanical surveys in Ontario and Maine.
Nuphar occurs across temperate regions documented in atlases from the United States Geological Survey, Environment Canada, Botanical Society of Britain and Ireland, and the Chinese Academy of Sciences. Populations are recorded in wetland inventories for areas including New England, Great Lakes, Boreal Forest, Western Europe, Central Asia, and parts of China and Japan, with distribution maps provided by institutions like the Royal Botanic Gardens, Kew and the Finnish Museum of Natural History. Habitats cited in conservation plans prepared by World Wildlife Fund partners and regional agencies include shallow lakes, slow-flowing rivers, marshes, and ponds noted in management documents from United States Fish and Wildlife Service and Natural Resources Canada.
Ecological interactions have been reported in studies conducted by researchers at Cornell University, University of British Columbia, University of Minnesota, and the University of Helsinki, showing roles as shelter and food for macroinvertebrates surveyed by the Freshwater Biological Association and vertebrates monitored by the IUCN and regional wildlife services. Pollination ecology involves flies and beetles noted in entomological surveys from Smithsonian Institution and universities such as University of Wisconsin–Madison and Pennsylvania State University, while seed dispersal mechanisms and germination ecology are treated in restoration guides from the National Park Service and USDA Natural Resources Conservation Service. Phenological data appear in datasets maintained by the National Phenology Network and botanical gardens including Royal Botanic Gardens, Kew.
Ethnobotanical uses of Nuphar are recorded in compilations by the Royal Ontario Museum, Smithsonian Institution, and ethnobotanical surveys conducted by researchers at University of Alaska Fairbanks and University of British Columbia. Historic uses figure in regional histories from New England Historical Society and maritime accounts referenced by the Hudson's Bay Company archives. Horticultural interest by organizations such as the Royal Horticultural Society and botanical collections at Kew Gardens and Missouri Botanical Garden promote Nuphar in aquatic gardening and public displays alongside plants like Nymphaea and Nelumbo (plant). Artistic and literary appearances occur in collections associated with the Tate Britain, Musee d'Orsay, and in travelogues preserved by the British Library and Library of Congress.
Conservation status assessments for Nuphar taxa are included in databases managed by the IUCN, national red lists produced by agencies like NatureServe and Environment Canada, and regional conservation plans prepared by the European Environment Agency and state wildlife agencies. Threats documented by the United States Environmental Protection Agency, International Union for Conservation of Nature, and regional conservation NGOs include habitat loss from development recorded by the US Fish and Wildlife Service, eutrophication monitored by the European Environment Agency, and competition with invasive taxa cataloged by the Global Invasive Species Database and researchers at the Invasive Species Centre. Restoration and ex situ conservation efforts involve botanical gardens such as Royal Botanic Gardens, Kew, Missouri Botanical Garden, and seed conservation programs coordinated by the Millennium Seed Bank Partnership.