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Nuphar advena
Species of aquatic plant From Wikipedia, the free encyclopedia
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Nuphar advena (spatterdock or cow lily or yellow pond-lily) is a species of Nuphar native throughout the eastern United States and in some parts of Canada, such as Nova Scotia,[3][4] as well as Mexico and Cuba.[5][2] It is locally naturalized in Britain.[5]
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Description
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Vegetative characteristics
Nuphar advena is a perennial, aquatic herb[5] with 5–10 cm wide,[3] spongy rhizomes.[6] The leaves are emergent,[7][8] floating, or submersed,[8] but most leaves are emergent.[9] The submerged leaves are 12–40 cm long, and 7–30 cm wide.[10]
Generative characteristics
The protogynous, fragrant, nectariferous,[11] solitary,[8][6] yellow-green,[8] up to 4 cm wide flowers[3] float on the water surface, or extend beyond it.[8] The flowers have six sepals.[9][3] The gynoecium consists of 9–23 carpels.[3] The fleshy,[10] ovoid to broadly obovate,[9] ribbed, green, 2–5 cm long, and 2–5 cm wide fruit[3] bears 186–353[11] 3-6 mm long seeds.[3]
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Taxonomy
It was first published as Nymphaea advena Aiton by William Aiton in 1789.[12][2][13] It was placed into the genus Nuphar Sm. as Nuphar advena (Aiton) W.T.Aiton published by William Townsend Aiton in 1811.[14][15] It is placed in the section Nuphar sect. Astylus.[16]
Natural hybridisation
In the United Kingdom, it has hybridised with Nuphar lutea, resulting in the hybrid Nuphar × porphyranthera.[9][17]
Etymology
The specific epithet advena means immigrant,[18][10] outsider, foreigner, or stranger.[19]
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Cytology
The chromosome count is 2n = 34.[20] The chloroplast genome is 160866 bp long.[21]
Distribution
It is native to Canada, the United States, Mexico, and Cuba.[2] It has been introduced to the United Kingdom.[5]
Conservation
The NatureServe conservation status is T5 Secure.[1]
Ecology
Habitat
It occurs in ponds, lakes, streams, rivers,[7] marshes, and swamps.[8]
Herbivory
The seeds are eaten by turtles and waterfowl.[8]
Pollination
The flowers are pollinated by sweat bees, syrphid flies, and leaf beetles.[11]
Uses
Horticulture
It is cultivated as an ornamental plant.[22]
Food
It is used as food.[23][24][10] The seeds are eaten or ground to flour.[23][24]
References
External links
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