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Two parasitic species of Placopyrenium (Verrucariaceae) from freshwater habitats in north-west Europe

Published online by Cambridge University Press:  03 March 2009

Alan ORANGE
Affiliation:
Department of Biodiversity and Systematic Biology, National Museum of Wales, Cathays Park, Cardiff CF10 3NP, UK. Email: alan.orange@museumwales.ac.uk

Abstract

Two species of Placopyrenium, P. cinereoatratum and P. formosum, occur on siliceous rocks at the margins of rivers and lakes. Placopyrenium cinereoatratum is sometimes parasitic on Staurothele fissa; P. formosum is described as a new species, and is initially parasitic on Aspicilia aquatica.

Type
Research Article
Copyright
Copyright © British Lichen Society 2009

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