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The lichen genus Porina in Macaronesia, with descriptions of two new species

Published online by Cambridge University Press:  22 December 2006

Emmanuël SÉRUSIAUX ,
Franz BERGER ,
Maarten BRAND  and
Pieter van den BOOM
Emmanuël SÉRUSIAUX
Affiliation:
Plant Taxonomy & Conservation Biology Unit, Environmental Sciences Dept., University of Liège, Sart Tilman B22, B-4000 Liège, Belgium. Email: [email protected]
Franz BERGER
Affiliation:
A-4794 Kopfing 130, Austria
Maarten BRAND
Affiliation:
Klipperwerf 5, NL-2317 DX Leiden, The Netherlands
Pieter van den BOOM
Affiliation:
Arafura 16, NL-5691 JA Son, The Netherlands
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Abstract

Detailed studies on the lichen genus Porina in Macaronesia have led to a reappraisal of the genuine identity of Porina atlantica (Erichsen) P. M. Jørg., a characteristic species that has previously been confused with P. guaranitica, P. heterospora, P. nucula, P. mastoidea or P. rhodostoma in the literature, and is here reported from Madeira, the Canary Islands, Ireland, France and Portugal. Two new species are described: P. effilata Brand & Sérus. sp. nov. (known from Madeira, the Canary Islands, Great Britain, Ireland and Portugal) and P. ocoteae Brand & Sérus. sp. nov. (restricted to La Palma, Canary Islands, and São Jorge in the Azores). Porina leptospora Nyl. is recognized at the species level, and P. isidiata Kalb & Hafellner is reduced into synonymy with P. atlantica. A key to all known species of Porina in Macaronesia is provided.

Keywords

AzoresCanary IslandsEnglandFranceGomeraIrelandLa PalmalaurisilvaLos TilosMadeiraPorina effilataPorina ocoteaePortugalrare speciesSão JorgeTenerifeWales
Type
Research Article
Information
The Lichenologist , Volume 39 , Issue 1 , January 2007 , pp. 15 - 33
Copyright
© British Lichen Society 2007

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