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''Amanita rubrovolvata'', commonly known as the red volva Amanita, is a species of fungus in the Amanitaceae family. First described scientifically by the Japanese mycologist S. Imai in 1939, it is widely distributed in eastern Asia. The fungus produces small- to medium-sized mushrooms, with reddish-orange caps up to wide. The stems are up to tall, cream above the ring and cream to yellowish below it. The stem ends in a roughly spherical bulb at the base, which is covered with bright orange patches. Neither edibility nor toxicity have been established for the fungus, but it is suspected to be associated with neurological anomalies. Several molecular studies have confirmed the mushroom's classification in the subgenus ''Amanita'' of the genus ''Amanita'', along with closely related species such as ''A. muscaria''. ==Taxonomy, phylogeny, and naming== }} |3= |4= }} }} }} | caption=Phylogeny of ''A. rubrovolvata'' and related species based on ribosomal DNA sequences.〔 }} The species was first described scientifically by the Japanese mycologist Sanshi Imai in 1939, based on various collections made in Japan during 1933–38. Imai designated the Japanese name for mushroom as ''Hime-beni-tengutake'' (ヒメベニテングタケ).〔 According to the online taxonomical database MycoBank, the name ''Amplariella rubrovolvata'', proposed by French mycologist Jean-Edouard Gilbert in 1941,〔 is a synonym;〔 the generic name ''Amplariella'' has since been subsumed into ''Amanita''.〔 ''Amanita rubrovolvata'' is classified in the subgenus ''Amanita'' of the genus ''Amanita'', according to the systems proposed by Cornelis Bas (1969),〔 and Rolf Singer (1986).〔 It was one of 49 ''Amanita'' species included in a 1998 molecular phylogenetic analysis intended to help clarify natural groups and phylogenetic relationships within the genus. In the cladogram, ''A. rubrovolvata'' is on a branch next to a cluster of species including ''A. pantherina'' var. ''lutea'', ''A. gemmata'', ''A. farinosa'', and ''A. sinensis''.〔 These results were comparable to those published in later phylogenetic analyses (1999, 2004, 2010) that have included ''A. rubrovolata'' as part of a larger dataset.〔〔〔 The specific epithet ''rubrovolvata'' is derived from the Latin words ''ruber'' ("red"), and the adjective ''volvatus'' ("closely sheathed").〔 ''Amanita'' authority Rodham E. Tulloss has suggested "red volva Amanita" as an appropriate common name.〔 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 rubrovolvata」の詳細全文を読む スポンサード リンク
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