A new endemic Ramalina species from the Canary Islands (Ascomycota, Lecanorales)

Pérez-Vargas, Israel

doi:10.11646/phytotaxa.159.4.3

Cited by 17 publications

(17 citation statements)

References 37 publications

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“…As in previous studies (e.g. Pérez-Vargas & Pérez-Ortega 2014; Gasparyan et al . 2017; references therein), the relationships among many of the Ramalina taxa included in our broader phylogeny remain unresolved (Fig.…”

Section: Discussionsupporting

confidence: 73%

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A molecular phylogenetic evaluation of theRamalina siliquosacomplex, with notes on species circumscription and relationships withinRamalina

et al. 2020

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Lichens of the Ramalina siliquosa complex dominate seashore cliffs in Europe and South-East Asia, but their taxonomy has been vigorously debated for over a century. On many cliffs, they exhibit a bewildering zonation of chemotypes that resembles the classic zonation of organisms that occupy the littoral zone below. Do the chemotypes represent separate species, or infraspecific variation? To better understand the systematics of this group, sequences from four genetic loci (ITS, IGS, RPB1 and RPB2) were obtained for 59 samples from Denmark, France, Iceland, Norway, UK, Japan and Korea, including all major chemotypes. Maximum likelihood analysis of these sequences, together with sequences from 36 other Ramalina species, reveals that the complex comprises two distinct phylogenetic lineages, each including multiple chemotypes. These two putative species-level lineages correspond to the currently accepted taxa R. cuspidata and R. siliquosa. There is no evidence that these two taxa are phylogenetic sister species. Consequently, the explanation of this chemotype complex as an example of ‘sibling speciation’ is rejected. Specimens traditionally called ‘R. siliquosa’ from South-East Asia form a third clade, identified here as R. semicuspidata, with an additional, divaricatic acid chemotype. Other results include a robustly supported clade of Ramalina species that produce medullary depsides and depsidones; this clade includes another well-supported clade of south-eastern United States coastal plain and tropical Ramalina species. By contrast, large, strap-shaped Ramalina species that lack medullary depsides and depsidones occur in separate lineages. In addition, close relationships between the following groups of species are indicated: R. farinacea with R. subfarinacea; R. fraxinea with R. leptocarpha, R. menziesii and R. subleptocarpha; R. sinensis with R. unifolia. Furthermore, a new, variolaric acid-only chemotype is reported for R. farinacea, and a new, acid-deficient chemotype is reported for a more broadly circumscribed R. culbersoniorum.

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Section: Discussionsupporting

confidence: 73%

“…2010; Timsina et al . 2012; Pérez-Vargas & Pérez-Ortega 2014; Gasparyan et al . 2017), and of species complexes within Ramalina (Groner & LaGreca 1997; LaGreca 1999; Ohmura et al .…”

Section: Introductionmentioning

confidence: 99%

A molecular phylogenetic evaluation of theRamalina siliquosacomplex, with notes on species circumscription and relationships withinRamalina

et al. 2020

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“…To establish whether a record is new for La Palma or the Canary Islands, the most recent checklist for lichens and lichenicolous fungi of the Canary Islands, Hernández-Padrón & Pérez-Vargas (2010), was consulted and indicated as H-2010 below. The following more recent publications were also checked: Aptroot & Schumm (2012), van den Boom (2010Boom ( , 2013, van den , van den Boom & Ertz (2012), van den Boom & Etayo (2017), van den , Giralt & van den Boom (2011), Montelongo et al (2015), Pérez-Vargas & Pérez-Ortega (2014), Pérez-Vargas et al (2010b, 2010d, 2012a, 2012b, 2015a, 2015b and Tehler et al (2013).…”

Section: Methodsmentioning

confidence: 99%

Further new or interesting lichens and lichenicolous fungi from La Palma (Canary Islands, Spain)

Boom¹,

Clerc²

2017

Folia Cryptog. Estonica

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Forty-five taxa of lichens and lichenicolous fungi are recorded from La Palma for the first time. Twelve are new to the Canary Islands archipelago. One further species, Didymocyrtis canarienis, is described as new for science. The total number of known taxa from the island La Palma has raised to 874. An alphabetical annotated species list of all taxa with collection localities, substrate and occasional further annotations is presented.

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“…Culberson 1967;Sheard & James 1976;Rundel 1978;Krog & Østhagen 1980;Stevens 1987). However, recent studies have shown that different morphological and/or chemical characteristics, once thought to be caused by environmental factors, can also indicate distinct species (Kashiwadani et al 2007;Ohmura et al 2008;Hayward et al 2014;Pérez-Vargas & Pérez-Ortega 2014).…”

Section: Introductionmentioning

confidence: 99%

A new riparian species of Ramalina (Ramalinaceae) from Brazil, with a key to neotropical saxicolous species

Gumboski¹,

Eliasaro

Scur

et al. 2018

The Lichenologist

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The new species Ramalina fleigiae from Brazil is described growing on rocks in riverbeds in high altitude grasslands of southern Brazil. It grows in areas with constant water flow, sometimes almost immersed, and always in exposed habitats. Through an integrative approach, the detailed description of R. fleigiae includes morphological, anatomical, ecological, chemical and molecular data. Ribosomal DNA-based phylogenies suggest that R. fleigiae is more closely related to a species that shares its habitat preference (R. laevigata) than to the morphologically and chemically similar R. exiguella and R. gracilis. Ramalina fleigiae and R. laevigata can be distinguished by thallus morphology (irregularly flat branches in R. fleigiae vs. flat to canaliculate in R. laevigata) and pattern of chondroid tissue, as genetic distances between them are compatible with the interspecific range. It is possible that many species of Ramalina still remain hidden within the morphological or chemical variation of currently accepted species. Combining ecological, anatomical and molecular data will improve our future understanding of this genus.

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A new endemic Ramalina species from the Canary Islands (Ascomycota, Lecanorales)

Cited by 17 publications

References 37 publications

A molecular phylogenetic evaluation of theRamalina siliquosacomplex, with notes on species circumscription and relationships withinRamalina

A molecular phylogenetic evaluation of theRamalina siliquosacomplex, with notes on species circumscription and relationships withinRamalina

Further new or interesting lichens and lichenicolous fungi from La Palma (Canary Islands, Spain)

A new riparian species of Ramalina (Ramalinaceae) from Brazil, with a key to neotropical saxicolous species

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