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The genus Relicinopsis is nested within Relicina (Parmeliaceae, Ascomycota)

Published online by Cambridge University Press:  30 May 2017

Paul M. KIRIKA ,
Pradeep K. DIVAKAR ,
Steven D. LEAVITT ,
Kawinnat BUARUANG ,
Ana CRESPO ,
George MUGAMBI ,
Grace W. GATHERI  and
H. Thorsten LUMBSCH
Paul M. KIRIKA
Affiliation:
Department of Plant Sciences, Kenyatta University, P.O. Box 43844-00100, Nairobi, Kenya Botany Department, National Museums of Kenya, P.O. Box 40658-00100, Nairobi, Kenya
Pradeep K. DIVAKAR
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid 28040, Spain
Steven D. LEAVITT
Affiliation:
Science & Education, The Field Museum, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA
Kawinnat BUARUANG
Affiliation:
Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, Bangkhen, Bangkok, 10900 Thailand
Ana CRESPO
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid 28040, Spain
George MUGAMBI
Affiliation:
Department of Biological Sciences, School of Pure and Applied Sciences, Meru University of Science and Technology, P.O. Box 972-60200, Meru, Kenya
Grace W. GATHERI
Affiliation:
Department of Plant Sciences, Kenyatta University, P.O. Box 43844-00100, Nairobi, Kenya
H. Thorsten LUMBSCH*
Affiliation:
Science & Education, The Field Museum, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA
*
Email: tlumbsch@fieldmuseum.org
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Abstract

Macro-morphological features traditionally used to segregate genera in Parmeliaceae have been shown to be highly plastic, placing limits on their taxonomic value. Here we aim to elucidate the evolutionary relationships of the genera Relicina and Relicinopsis and reassess the phenotypic features traditionally used to separate these genera. To this end, we gathered ribosomal DNA sequences of ITS, nuLSU and mtSSU and analyzed them in a phylogenetic framework. Relicina was recovered as paraphyletic, with Relicinopsis nested within, and three different clades were identified within Relicina. Alternative hypothesis tests significantly rejected the monophyly of Relicina. Our results indicate that the presence or absence of bulbate cilia is of limited taxonomic value in this clade. Based on differences in conidia, however, we propose to accept Relicinopsis as a subgenus within Relicina as Relicina subgen. Relicinopsis (Elix & Verdon) Kirika, Divakar & Lumbsch. It is proposed that five new combinations of species previously classified in Relicinopsis be placed in Relicina.

Keywords

generic circumscriptionintegrative taxonomylichenized fungimolecular systematicsparmelioid lichens

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Type
Articles
Information
The Lichenologist , Volume 49 , Issue 3 , May 2017 , pp. 189 - 197
Copyright
© British Lichen Society, 2017 

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