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Studies on Some Leptogium Species of Western Europe

Published online by Cambridge University Press:  28 March 2007

P. M. Jørgensen  and
P. W. James
P. M. Jørgensen
Affiliation:
Botanical Institute, University of Bergen, Box 12, N-5014 Bergen, Norway.
P. W. James
Affiliation:
Department of Botany, British Museum (Natural History), Cromwell Road, London SW7 5BD.
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Abstract

The Leptogium azureum group in Europe is revised. Leptogium britannicum sp. nov., a species growing among grass on coastal rocks, is described. Leptogium azureum (Sw.) Mont. is shown to be absent from Europe, most of the material so named is Leptogium cochleatum (Dickson) comb. nov. Leptogium rivulare (Ach.) Mont. and Leptogium corticola (Tayl.) Tuck. are shown to have very limited distributional areas in central Sweden and the north-west U.S.S.R., and northern Italy and northern Yugoslavia respectively; both are in danger of extinction. The nomenclature of all species, including also Leptogium cyanescens (Rabenh.) Körber, is discussed.

Leptogium juressianum C. Tav., a species of the Leptogium lichenoides-group with hairs on the upper surface, is reported from south-west Ireland; the first record since it was described from Portugal.

Type
Research Article
Information
The Lichenologist , Volume 15 , Issue 2 , June 1983 , pp. 109 - 125
Copyright
Copyright © British Lichen Society 1983

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