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Rhodotus
''Rhodotus'' is a genus in the fungus family Physalacriaceae. It is a monotypic genus and consists of the single mushroom species ''Rhodotus palmatus'', known in the vernacular as the netted rhodotus, the rosy veincap, or the wrinkled peach. This uncommon species has a circumboreal distribution, and has been collected in eastern North America, northern Africa, Europe, and Asia; declining populations in Europe have led to its appearance in over half of the European fungal Red Lists of threatened species. Typically found growing on the stumps and logs of rotting hardwoods, mature specimens may usually be identified by the pinkish color and the distinctive ridged and veined surface of their rubbery caps; variations in the color and quantity of light received during development lead to variations in the size, shape, and cap color of fruit bodies.
The unique characteristics of ''R. palmatus'' have made it difficult for taxonomists to agree on how it should be classified, resulting in an elaborate taxonomical history and an extensive synonymy. First named ''Agaricus palmatus'' by Bulliard in 1785, it was reclassified into several different genera before becoming ''Rhodotus'' in 1926. The familial placement of the genus ''Rhodotus'' within the order Agaricales has also been subject to dispute, and the taxon has been transferred variously to the families Amanitaceae, Entolomataceae, and Tricholomataceae. More recently, molecular phylogenetics analysis has helped determine that ''Rhodotus'' is most closely related to genera in the Physalacriaceae.
==History and etymology==
The type species of genus ''Rhodotus'' was originally described as ''Agaricus palmatus'' in 1785 by French botanist Jean Bulliard; mycologist Elias Magnus Fries later included it under the same name in his ''Systema Mycologicum''. It was transferred to the then newly described genus ''Rhodotus'' in a 1926 publication by French mycologist René Maire. The specific epithet is derived from the Latin ''palmatus'', meaning "shaped like a hand"—possibly a reference to the resemblance of the cap surface to the lines in the palm of a hand. Common names for ''R. palmatus'' include the netted rhodotus,〔(【引用サイトリンク】title=Fungi of Iowa: ''Rhodotus palmatus'' (Bull.: Fr.) Maire )〕 the rosy veincap, and the wrinkled peach.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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