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Charcotiana and Amundsenia, two new genera in Teloschistaceae (lichenized Ascomycota, subfamily Xanthorioideae) hosting two new species from continental Antarctica, and Austroplaca frigida, a new name for a continental Antarctic species

Published online by Cambridge University Press:  23 October 2014

Ulrik SØCHTING
Affiliation:
Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen K, Denmark. Email: ulriks@bio.ku.dk
Isaac GARRIDO-BENAVENT
Affiliation:
Departamento de Biogeoquímica y Ecología Microbiana, Museo Nacional de Ciencias Naturales (CSIC), C/Serrano 115-bis, Madrid, España
Rod SEPPELT
Affiliation:
Tasmanian Herbarium, PO Box 5058, UTAS LPO, Sandy Bay, Tasmania 7005, Australia
Miris CASTELLO
Affiliation:
Department of Life Sciences, University of Trieste, via Giorgieri 10, I-34127 Trieste, Italy
Sergio PÉREZ-ORTEGA
Affiliation:
Departamento de Biogeoquímica y Ecología Microbiana, Museo Nacional de Ciencias Naturales (CSIC), C/Serrano 115-bis, Madrid, España
Asunción DE LOS RÍOS MURILLO
Affiliation:
Departamento de Biogeoquímica y Ecología Microbiana, Museo Nacional de Ciencias Naturales (CSIC), C/Serrano 115-bis, Madrid, España
Leopoldo Garcia SANCHO
Affiliation:
Universidad Complutense de Madrid, Departamento de Biología Vegetal II, Plaza de Ramón y Cajal s/n, S-28040 Madrid, Spain
Patrik FRÖDÉN
Affiliation:
Botanical Museum, Lund University, Box 117, SE-221 00 Lund, Sweden
Ulf ARUP
Affiliation:
Botanical Museum, Lund University, Box 117, SE-221 00 Lund, Sweden

Abstract

Based on a combined three locus analysis two new genera, Charcotiana and Amundsenia, are proposed in the lichen family Teloschistaceae, subfamily Xanthorioideae. Charcotiana includes the new species C. antarctica, which is known only from continental Antarctica. The bipolar genus Amundsenia includes the new species A. austrocontinentalis, which is also known only from continental Antarctica, and the Arctic species Caloplaca approximata which is here combined into the new genus. The two new genera are phylogenetically distinct, but poor in morphological characters; the new species consist mainly of minute apothecia in cracks of rocks located in the climatically harshest regions of the Antarctic. They are somewhat similar to another continental Antarctic species, Austroplaca frigida, which is described as a new name based on the illegitimate name Caloplaca frigida Søchting. The distribution of the four species is mapped.

Type
Articles
Copyright
Copyright © British Lichen Society 2014 

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