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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Angraecum sesquipedale ： ウィキペディア英語版 Angraecum sesquipedale ''Angraecum sesquipedale'' , also known as Darwin's orchid, Christmas orchid, Star of Bethlehem orchid, and King of the Angraecums, is an epiphytic orchid in the genus ''Angraecum'' endemic to Madagascar. The orchid was first discovered by the French botanist Louis-Marie Aubert du Petit-Thouars in 1798, but was not described until 1822. It is noteworthy for its long spur and its association with the naturalist Charles Darwin, who surmised that the flower was pollinated by a then undiscovered moth with a proboscis whose length was unprecedented at the time. His prediction had gone unverified until 21 years after his death, when the moth was discovered and his conjecture vindicated. The story of its postulated pollinator has come to be seen as one of the celebrated predictions of the theory of evolution.〔 ==Description== ''Angraecum sesquipedale'' is a monocot with monopodial growth and can grow to a height of .〔 Its growth habit is rather similar to species in the genus ''Aerides''. The leaves are dark green with a bit of a grayish tone and leathery with a bilobed tip. They are usually around long and wide.〔 The roots are dark gray, thick, and emerge from the orchid's stem. There tends to be few roots and they attach to the bark of the trees quite strongly. Each of the succulent roots can extend along the trunk of the tree for several meters. There is also a variation of this species namely ''A. sesquipedale'' var. ''angustifolium''. ''A. sesquipedale'' var. ''angustifolium'' tends to be smaller than ''A. sesquipedale'' and has narrower leaves. The chromosome number of ''A. sesquipedale'' is 2n=42.〔The Arends source quotes 2n=38 in contradiction with the Jones source.〕 ''A. sesquipedale'' has also previously gone by the synonyms ''Aeranthes sesquipedalis'' Lindl. (1824), ''Macroplectrum sesquipedale'' Pfitzer (1889), ''Angorchis sesquepedalis'' Kuntze (1891), and ''Mystacidium sesquipedale'' Rolfe (1904). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Angraecum sesquipedale」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.