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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 Amanita thiersii ： ウィキペディア英語版 Amanita thiersii ''Amanita thiersii'', commonly called Thiers' lepidella, is a North-American saprotrophic basidiomycete fungus in the genus ''Amanita''. It is a white mushroom originally described from Texas but today found in nine states of North America. It was named after Harry Delbert Thiers. The cap of this small mushroom is white and convex, measuring and covered by volval remnants. It is sticky to the touch when wet. The gills are variable in length and number and are densely packed in some specimens and widely spaced in others. They are not attached to the stipe, which is long and about thick, with a white ring. The spores measure 7.8–9.8 by 7.3–9.0 µm and are roughly spherical in shape. The spore print is white. The mushroom grows in lawns, pastures and prairies. It is a saprotroph, living on decaying plant material, and not mycorrhizal as is the case in most other species of ''Amanita''. Fruit bodies appear during July and August, either in isolation or in groups, and often form fairy rings. The genome of ''A. thiersii'' is being sequenced as part of the United States Department of Energy's Joint Genome Institute Community Sequencing Program. It is hoped that this will provide a better understanding of the cellulose decomposition capabilities of the fungus. The toxicity of ''A. thiersii'' has not been studied but it is suspected of being poisonous. ==Taxonomy== ''Amanita thiersii'' was first described in 1957 by Harry Delbert Thiers, an American mycologist, who had spotted it on a campus lawn when he was a student. He named it ''Amanita alba'' but that name was disallowed as it had already been used for another species. In 1969 it was renamed by the Dutch mycologist Cornelis Bas as ''Amanita thiersii'' in honour of its finder. It is placed in the genus ''Amanita''〔 in the section ''Lepidella'' and subsection ''Vittadiniae''. Bas created the stirps (an informal ranking below species level) ''Thiersii'', in which he places ''A. thiersii'' along with ''A. albofloccosa'', ''A. aureofloccosa'', ''A. foetens'' and ''A. praeclara''.〔 The mushroom is commonly called "Thiers' lepidella".〔 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「Amanita thiersii」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.