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Aceria pseudoplatani : ウィキペディア英語版 | Aceria pseudoplatani
''Aceria pseudoplatani'' causes the Sycamore Felt Gall that is found on the leaves of Sycamores (''Acer pseudoplatanus'') or Norway Maple (''Acer platanoides''),〔(Plant Galls ) Retrieved : 2013-07-05〕 and is caused by an acarine gall-mite. ==Appearance== The gall forms a bulge on the upper epidermis where the pigment colour is usually light yellow to start with and brown later on in the year. The appearance on the lower epidermis is a concavity with cream or white coloured felt-like mat which later turns brown.〔Hancy, Page 83〕〔Redfern, Page 274〕 The bulge is due to the erinae or hairs being wider at their top. In purple-leaved varieties of the sycamore the patches are pink.〔 The size of the felt-like patches is variable and they may appear from late spring onwards.〔Darlington, Page 125〕
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「Aceria pseudoplatani」の詳細全文を読む
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