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Insights into the genus Austrella (Pannariaceae, Peltigerales), including a new species from the Falkland Islands

Published online by Cambridge University Press:  18 January 2017

Alan M. FRYDAY
Affiliation:
Herbarium, Department of Plant Biology, Michigan State University, East Lansing, MI 48824-1312, USA. Email: [email protected]
Damien ERTZ
Affiliation:
Department Bryophytes-Thallophytes, Botanic Garden Meise, Nieuwelaan 38, B-1860 Meise, Belgium Fédération Wallonie-Bruxelles, Direction Générale de l’Enseignement non obligatoire et de la Recherche Scientifique, Rue A. Lavallée 1, B-1080 Bruxelles, Belgium
Per Magnus JØRGENSEN
Affiliation:
Herbarium, Museum of Natural History, Bergen University Museum, Allégaten 41, Postboks 7800, N-5020 Bergen, Norway

Abstract

The new species Austrella isidioidea, which is unique in the genus in having isidioid structures on the thallus lobe ends as well as apothecia lacking a thalline margin, is described from the Falkland Islands. A collection with an identical mtSSU rDNA sequence to A. arachnoidea but with significant morphological differences (viz. a variable apothecial margin ranging from an arachnoid hyphal weft to a corticated regular margin) is reported from Îles Kerguelen. The phylogenetic and biogeographical implications of these new records are discussed.

Type
Articles
Copyright
© British Lichen Society, 2017 

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