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Vagrant Dermatocarpon in Western North America

Roger Rosentreter and Bruce McCune
The Bryologist
Vol. 95, No. 1 (Spring, 1992), pp. 15-19
DOI: 10.2307/3243779
Stable URL: http://www.jstor.org/stable/3243779
Page Count: 5
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Vagrant Dermatocarpon in Western North America
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Abstract

Dermatocarpon miniatum (L.) Mann and D. reticulatum Magn. have vagrant forms with the gross morphology of D. vagans Imsh. Dermatocarpon vagans is not a distinct species. Rather, it is an environmental modification of D. reticulatum. Optimum habitat for vagrant Dermatocarpon in the western United States has the following characteristics: mostly flat, exposed areas with sparse vegetation; thin rocky basalt soils; seasonal shallow ponding; and a climate with hot dry summers and cold winters.

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