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Notes on Nearctic Hepaticae, XVII. Lophozia decolorans, New to North America and the Subgenus Isopaches

R. M. Schuster
The Bryologist
Vol. 98, No. 2 (Summer, 1995), pp. 246-250
DOI: 10.2307/3243311
Stable URL: http://www.jstor.org/stable/3243311
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Notes on Nearctic Hepaticae, XVII. Lophozia decolorans, New to North America and the Subgenus Isopaches
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Abstract

The rare species Lophozia (Isopaches) decolorans (Limpr.) Steph., previously known only from alpine and arctic regions of Europe is reported for western North America. A key to the three holarctic taxa in the subgenus Isopaches (Buch) Schust. is presented. The ecology of L. decolorans is discussed, and the scattered and in part contradictory literature is assessed. The ability to tolerate windswept and intermittently desiccated sites suggests the species may have survived the Pleistocene north of areas of continental glaciation and in ice-free corridors situated (in North America) between the major eastern and western ice sheets.

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