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A reappraisal of Masonhalea (Parmeliaceae, Lecanorales) based on molecular and morphological data

Published online by Cambridge University Press:  31 October 2013

Matthew P. NELSEN ,
Arne THELL ,
Steven D. LEAVITT ,
Celia J. HAMPTON-MILLER  and
H. Thorsten LUMBSCH
Matthew P. NELSEN
Affiliation:
Committee on Evolutionary Biology, University of Chicago, 1025 E. 57th Street, Chicago, Illinois 60637, USA. Email: mpnelsen@gmail.com Department of Botany, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, USA
Arne THELL
Affiliation:
The Biological Museums, Lund University, Box 117, SE-221 00 Lund, Sweden
Steven D. LEAVITT
Affiliation:
M. L. Bean Life Science Museum, Brigham Young University, Provo, Utah 84602, USA Department of Botany, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, USA
Celia J. HAMPTON-MILLER
Affiliation:
University of Alaska Museum, 907 Yukon Drive, Fairbanks, Alaska 99775, USA; and Department of Ecology and Evolutionary Biology, University of Michigan, 830 North University, Ann Arbor, Michigan 48109, USA
H. Thorsten LUMBSCH
Affiliation:
Department of Botany, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, USA
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Abstract

Previous studies have identified a close relationship between the monospecific Masonhalea richardsonii and Tuckermannopsis inermis. However, formal taxonomic changes were postponed until existing sequence data could be confirmed. Here we validate these data and discuss the transfer of T. inermis to Masonhalea (made by Lumbsch et al. in Thell & Moberg 2011), consider the morphological, anatomical and biogeographic similarities and differences between these two taxa. The two Masonhalea species both produce lateral apothecia, marginal pycnidia, a layer of cortical tissue beneath the pycnidial wall and bacillariform conidia.

Keywords

cetrarioidgeneric conceptlichensmolecular systematicsphylogenytaxonomy
Type
Articles
Information
The Lichenologist , Volume 45 , Issue 6 , November 2013 , pp. 729 - 738
Copyright
Copyright © British Lichen Society 2013 

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