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Sinuicella denisonii, a new genus and species in the Peltigeraceae from western North America

Published online by Cambridge University Press:  19 March 2021

Daphne F. Stone Open the ORCID record for Daphne F. Stone [Opens in a new window] ,
Bruce McCune Open the ORCID record for Bruce McCune [Opens in a new window] ,
Carlos J. Pardo-De la Hoz Open the ORCID record for Carlos J. Pardo-De la Hoz [Opens in a new window] ,
Nicolas Magain Open the ORCID record for Nicolas Magain [Opens in a new window]  and
Jolanta Miadlikowska Open the ORCID record for Jolanta Miadlikowska [Opens in a new window]
Daphne F. Stone*
Affiliation:
Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA
Bruce McCune
Affiliation:
Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA
Carlos J. Pardo-De la Hoz
Affiliation:
Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
Nicolas Magain
Affiliation:
Evolution and Conservation Biology, InBioS Research Center, University of Liège, Sart Tilman B22, Quartier vallée 1, Chemin de la vallée 4, B-4000 Liège, Belgium
Jolanta Miadlikowska
Affiliation:
Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
*
Author for correspondence: Daphne F. Stone. E-mail: daphstone@gmail.com
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Abstract

The new genus Sinuicella, an early successional lichen, was found on bare soil in Oregon, USA. The thallus is minute fruticose, grey to nearly black, branching isotomic dichotomous, branches round, 20–90 μm wide in water mount. The cortex is composed of interlocking cells shaped like jigsaw puzzle pieces. Spores are hyaline, 1-septate, 25–40(–50) × 6.5–9(–11) μm. Maximum likelihood phylogenetic analyses on multilocus data sets, first spanning the entire order Peltigerales and then restricted to Peltigeraceae with extended sampling from Solorina and Peltigera, revealed the placement of Sinuicella outside of currently recognized genera, sister to Peltigera, with high support. Based on the phylogenetic, morphological and ecological distinctness of Sinuicella, we formally introduce a new genus represented by the single species S. denisonii. The cyanobiont of S. denisonii is Nostoc from phylogroup XL, Clade 2, Subclade 3 based on the rbcLX marker.

Keywords

lichenized ascomyceteslichenized fungiNostocOregonPeltigeraPeltigeralesSolorinaUSA

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Type
Standard Papers
Information
The Lichenologist , Volume 53 , Issue 2 , March 2021 , pp. 185 - 192
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of the British Lichen Society

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