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Further contributions to the lichen genus Leptogium in southern South America

Published online by Cambridge University Press:  31 October 2013

Per M. JØRGENSEN
Affiliation:
University of Bergen – Bergen Museum, Arboretum and Botanical garden Mildeveien 240, Hjellestad 5259, Norway. Email: kristin.solheim@bm.uib.no
William R. BUCK
Affiliation:
New York Botanical Garden, Institute of Systematic Botany, Bronx, New York, USA

Abstract

Two new species in Leptogium are described and illustrated from the Cape Horn region: L. auriculatum and L. adnatum both grow on wet rocks, the former by a river, the latter on coastal rocks. In addition to the special habitat the latter is easily identified on the closely appressed thallus which centrally often have densely packed squamules in intricately folded structures. Leptogium auriculatum is characterized by the regular, rounded lobes with thickened margins carrying granular isidia. The total number of Leptogium species known in the region at present is 19, including the previously doubtful L. patagonicum Zahlbr., which is here confirmed as a distinct species.

Type
Articles
Copyright
Copyright © British Lichen Society 2013 

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References

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