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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Dermatocarpon americanum ： ウィキペディア英語版 Dermatocarpon americanum ''Dermatocarpon americanum'' (American stippleback lichen) is a silvery-gray, leafy (foliose) lichen with black dots that is common on near seeps in rock faces from southwestern North American deserts to coastal areas.〔〔〔Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2〕 It has a silvery-dusty looking coating.〔Lichen Flora of the Greater Sonoran Desert Region. Vol 2, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001, ()〕 It is common in deserts on vertical rock surfaces that are partially shade protected near seepages.〔〔Photo Gallery, Lichens of Joshua Tree National Park, National Park Service, ()〕 It is umbillicate, meaning it grows from a single anchoring stem called a holdfast), with a single-leaf body (thallus), which ranges in size from 1.7-6 cm.〔〔 The dusty looking top silvery coating on the cortex is dead fungal filaments (hyphae) filled with air (epinecral).〔 The lower surface is light to dark brown.〔 The black dots on the surface are the tops of the holes of flask shaped fruiting bodies that are embedded in the thallus, called perithecia. The perithecia range in shapes from that of an upside down pear (obpyriform) to spherical (globose).〔 Lichen spot tests are all negative, but the medulla reacts to Meltzer's iodine by turning red, which distinguishes it from ''D. miniatum'',〔〔 although not all lichenologists find this test to be reliable.〔 ==References== 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「Dermatocarpon americanum」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.