| 翻訳と辞書 |
| Orontium aquaticum ： ウィキペディア英語版 |
Orontium aquaticum
''Orontium aquaticum'' , sometimes called golden-club,〔 is a species of flowering plants in the Araceae family. It is the single living species in the genus ''Orontium'', which also contains several extinct species described from fossils. ''O. aquaticum'' is endemic to the eastern United States〔(1. Orontium aquaticum Linnaeus ), ''Flora of North America''〕 and is found growing in ponds, streams, and shallow lakes. It prefers an acidic environment. The leaves are pointed and oval with a water repellent surface. The inflorescence is most notable for having an extremely small almost indistinguishable sheath surrounding the spadix. Very early in the flowering this green sheath withers away leaving only the spadix. The sheath was originally classified by Adolf Engler as a spathe due it being the last foliar piece before the spadix.〔A. Engler, (1887). ''Vergleichende Untersuchungen uber die morphologischen Verhaltnisse der Araceae. II. Theil Ueber Blattstellung und Sprossverhaltnisse der Araceae'', Nova Acta der Ksl. Leop.-Carol.-Deutschen Akademie der Naturforscher 39: 158-231.〕 He also noted that species lacked a sympodial leaf. However, in a 1988 paper by Thomas Ray, he argued that the structure was misidentified by Engler and was actually a sympodial leaf. According to Ray the spathe was missing and not the sympodial leaf. This interpretation was determined based on observations of morphological charactestics namely the appearance of a two-keeled bracteole and its positioning.〔T.S. Ray, (1988). ''Survey of Shoot Organization in the Araceae'', American Journal of Botany, Vol. 75, No. 1〕 Despite this, the floral structure is still commonly identified in the literature as being a spathe.〔Z. Nie, H. Sun, H. Li, and J. Wen, (2006) ''Intercontinental biogeography of subfamily Orontioideae (Symplocarpus, Lysichiton, and Orontium) of Araceae in eastern Asia and North America'', Molecular Phylogenetics and Evolution 40 (2006) 155–165〕〔L.H. Klotz, (1992). ''On the biology of Orontium aquaticum L. (Araceae), golden club or floating arum'', Aroideana 15, 25–33.〕〔S.J. Mayo, J. Bogner, P.C. Boyce, (1997). ''The genera Araceae'', Royal Botanic Gardens, Kew.〕 The flowering occurs in the spring. Native Americans once ate the seeds and rhizome by drying them out and grinding them into a starchy substance.
Image:Orontium aquaticum 2 - Buffalo Botanical Gardens.jpg
Image:Orontium aquaticum.jpg
==Notes==
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「Orontium aquaticum」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.
|
|