Nimisora (Lecanoraceae, Ascomycota), a new genus for a common lecideoid epiphytic species from the central Iberian Peninsula

The new genus Nimisora Pérez-Ort., M. Svenss. & J. C. Zamora is introduced to accommodate a puzzling lecideoid epiphyte common in the central Iberian Peninsula. Nimisora is characterized by the following combination of characters: lecideoid apothecia, excipulum composed of sparingly branched rad...

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Bibliographic Details
Published in:The Lichenologist (London) 2023-09, Vol.55 (5), p.335-345
Main Authors: Pérez-Ortega, Sergio, Turégano, Yolanda, Svensson, Måns, Zamora, Juan Carlos
Format: Article
Language:English
Subjects:
Apothecia
Ascomycota
Ascospores
Bacidia-type ascus
Digital cameras
Epiphytes
Hyphae
Lecanoraceae
lichen systematics
New genera
New genus
New species
Phylogenetics
Phylogeny
Ribosomal DNA
Spain
Standard Paper
Taxonomy
Thick walls
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Description
Summary:The new genus Nimisora Pérez-Ort., M. Svenss. & J. C. Zamora is introduced to accommodate a puzzling lecideoid epiphyte common in the central Iberian Peninsula. Nimisora is characterized by the following combination of characters: lecideoid apothecia, excipulum composed of sparingly branched radiating hyphae with narrow lumina, thick walls and swollen terminal cells, the presence of a brown K+ olivaceous green pigment in the epihymenium, an ascus tip similar to the Bacidia-type, and the presence of simple ellipsoid ascospores. Molecular analyses based on nrITS, nrLSU and mtSSU sequences unequivocally place the new genus within the Lecanoraceae; however, its phylogenetic affinities with other genera of the family remain largely unresolved. Comparisons with the morphologically closest genera are provided. The single species of the genus, Nimisora iberica Pérez-Ort., Turégano, M. Svenss. & J. C. Zamora sp. nov., is also described as new to science.
ISSN:0024-2829
1096-1135
1096-1135
DOI:10.1017/S0024282923000427