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Umbilicaria americana : ウィキペディア英語版 | Umbilicaria americana
''Umbilicaria americana'', commonly known as Frosted Rock Tripe, is a foliose lichen of rock faces. ==Description== ''U. americana'' has been described as looking like "grayish-white potato chips."〔"Rocky Mountain National Park- Umbilicaria americana (U.S. National Park Service)." Jul 14, 2007.http://www.nps.gov/romo/umbilicaria_americana.htm (accessed Dec 17, 2008).〕 The upper surface is gray with the appearance of white dusting. The lower surface is black. The lobes are 2 to 7 cm in diameter.
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「Umbilicaria americana」の詳細全文を読む
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