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Betula oycoviensis : ウィキペディア英語版 | Betula oycoviensis
''Betula oycoviensis'' is a species of hybrid origin in the Betulaceae family. It is found in the Czech Republic, Denmark, Poland, Romania, Russia, Slovakia, Sweden, and Ukraine, and is threatened by habitat loss. It was described in 1809 by Wilibald Swibert Joseph Gottlieb von Besser.〔 == Origin and taxonomy == ''B. oycoviensis'' is a genetic cross of two other species of ''Betula''; ''B. pendula'' and ''B. szaferi'', the latter having specimens in a botanic garden, and evidently nowhere else. Rafaël Govaerts, a botanist at Kew Gardens, treats it as a variety of ''Betula pendula'' (''B. pendula'' var. ''oycowiensis'').〔
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「Betula oycoviensis」の詳細全文を読む
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