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Lichens in relation to management issues in the Sierra Nevada national parks
The central and southern Sierra Nevada are subjected to high levels of ozone, high and increasing nitrogen deposition, and unknown quantities of pesticides such as organophosphates from agriculturalExpand
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Five New Species of Hypogymnia with Rimmed Holes from the Chinese Himalayas
Abstract Five new species are described from the group of Hypogymnia with rimmed holes on the lower surface: H. bulbosa, H. congesta, H. diffractaica, H. laxa, and H. pseudocyphellata. All species inExpand
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Distribution and Morphological Variation of Leptogium cellulosum and L. teretiusculum in the Pacific Northwest
Abstract Leptogium cellulosum and L. teretiusculum are much more frequent and widespread in the Pacific Northwest of North America than previously recognized. Leptogium cellulosum, formerly knownExpand
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