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Hymenocallis coronaria : ウィキペディア英語版 | Hymenocallis coronaria
''Hymenocallis coronaria'', commonly known as the Cahaba lily, Shoal lily, or Shoals spider-lily, is an aquatic, perennial flowering plant species of the genus ''Hymenocallis''. It is endemic to the Southeastern United States, being found only in Alabama, Georgia, South Carolina and parts of North Carolina.〔(Kew World Checklist of Selected Plant Families )〕〔(Biota of North America Program 2013 county distribution map )〕 Within Alabama, it is known as the Cahaba lily; elsewhere it is known as the Shoal lily or Shoals spider-lily. ==Description and habitat==
''Hymenocallis coronaria'' requires a swift, shallow, water current and direct sunlight to flourish.〔(【引用サイトリンク】work=CahabaLily.com )〕 The plant grows to about tall and develops from a bulb that lodges in cracks in rocky shoals.〔(【引用サイトリンク】work=Cahabariver.net )〕 It blooms from early May to late June.〔 Each fragrant flower blossom opens overnight and last for one day. They are visited and possibly pollinated by ''Paratrea plebeja'', commonly known as the plebeian sphinx moth, and ''Battus philenor'', the pipevine swallowtail butterfly. The plant was first observed in 1783 by William Bartram and described as the "odoriferous ''Pancratium fluitans'' which almost alone possesses the little rocky islets". He saw it growing in the Savannah River near Augusta, Georgia.〔(【引用サイトリンク】work=eFloras.org )〕
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