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Vagnia, a Remarkable Coelomycete Producing a Black Columnar Cirrus on Peltigera in Poland

Published online by Cambridge University Press:  28 March 2007

David L. Hawksworth
International Mycological Institute, Bakeham Lane, Egham, Surrey TW20 9TY, UK.
Jolanta Miadlikowska
Department of Plant Ecology and Nature Protection, University of Gdańsk, al. Legionów 9, 80–441 Gdańsk, Poland.


The new genus Vagnia is introduced for the single species V. cirriformia discovered on thalli of Peltigera in Poland; it appears to be a pathogen as the cortex is destroyed in a rounded patch within which the conidiomata occur. The fungus is characterized by cupulate to doliiform conidiomata clothed in white hairs and from which a black columnar cirrus of conidia arises. The simple ellipsoid conidia are hyaline when viewed individually and are formed enteroblastically from elongate conidiogenous cells supported by branched conidiophores.

Research Article
Copyright © British Lichen Society 1997

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