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The taxonomy of the Caloplaca citrina group (Teloschistaceae) in the Black Sea region; with contributions to the cryptic species concept in lichenology

Vondrak, Jan; Riha, Pavel; Arup, Ulf LU and Sochting, Ulrik (2009) In Lichenologist 41. p.571-604
Abstract
A new taxonomy of the Caloplaca citrina group in the Black Sea region is presented. It is based on the nrDNA ITS molecular data, chemistry (anthraquinone contents) and 20 morphological characters. Six species previously known in the region are accepted: Caloplaca arcis, C. calcitrapa, C. dichroa, C. flavocitrina, C. geleverjae, C. limonia. Five new species are described: Caloplaca arcisproxima, C. austrocitrina, C. communis, C. confusa and C. nigromarina. Seven further species, Caloplaca britannica, C. citrina, C. marina, C. maritima, C. microthallina, C. ora and C. phlogina are also treated briefly. Some maritime species known from the Atlantic coast of Europe are absent from the region, and, surprisingly, Caloplaca citrina s. str. could... (More)
A new taxonomy of the Caloplaca citrina group in the Black Sea region is presented. It is based on the nrDNA ITS molecular data, chemistry (anthraquinone contents) and 20 morphological characters. Six species previously known in the region are accepted: Caloplaca arcis, C. calcitrapa, C. dichroa, C. flavocitrina, C. geleverjae, C. limonia. Five new species are described: Caloplaca arcisproxima, C. austrocitrina, C. communis, C. confusa and C. nigromarina. Seven further species, Caloplaca britannica, C. citrina, C. marina, C. maritima, C. microthallina, C. ora and C. phlogina are also treated briefly. Some maritime species known from the Atlantic coast of Europe are absent from the region, and, surprisingly, Caloplaca citrina s. str. could not be confirmed from the study area. A key to the species present in the region is provided, although morphological characters are of very limited value in this group. The variability and taxonomic importance of particular features are discussed. No significant differences in secondary chemistry were observed among the species. Many examples of convergence and some semi-cryptic species were revealed by molecular data. The term 'semi-cryptic species' is introduced here into lichenology for those species which cannot be clearly diagnosed by their morphology, but which are determined by other characters, mainly by their ecology and distribution. We propose to describe formally such species, in spite of difficulties with subsequent morphological identification. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
semi-cryptic species, Teloschistales, nrDNA ITS, lichens, alveolate cortex, Caloplaca citrina clade
in
Lichenologist
volume
41
pages
571 - 604
publisher
Cambridge University Press
external identifiers
  • wos:000271141000003
  • scopus:75349111728
ISSN
0024-2829
DOI
10.1017/S0024282909008317
language
English
LU publication?
yes
id
d358d3a3-2234-41d6-8691-58418365c18c (old id 1505342)
date added to LUP
2009-11-24 11:22:22
date last changed
2017-12-10 04:11:42
@article{d358d3a3-2234-41d6-8691-58418365c18c,
  abstract     = {A new taxonomy of the Caloplaca citrina group in the Black Sea region is presented. It is based on the nrDNA ITS molecular data, chemistry (anthraquinone contents) and 20 morphological characters. Six species previously known in the region are accepted: Caloplaca arcis, C. calcitrapa, C. dichroa, C. flavocitrina, C. geleverjae, C. limonia. Five new species are described: Caloplaca arcisproxima, C. austrocitrina, C. communis, C. confusa and C. nigromarina. Seven further species, Caloplaca britannica, C. citrina, C. marina, C. maritima, C. microthallina, C. ora and C. phlogina are also treated briefly. Some maritime species known from the Atlantic coast of Europe are absent from the region, and, surprisingly, Caloplaca citrina s. str. could not be confirmed from the study area. A key to the species present in the region is provided, although morphological characters are of very limited value in this group. The variability and taxonomic importance of particular features are discussed. No significant differences in secondary chemistry were observed among the species. Many examples of convergence and some semi-cryptic species were revealed by molecular data. The term 'semi-cryptic species' is introduced here into lichenology for those species which cannot be clearly diagnosed by their morphology, but which are determined by other characters, mainly by their ecology and distribution. We propose to describe formally such species, in spite of difficulties with subsequent morphological identification.},
  author       = {Vondrak, Jan and Riha, Pavel and Arup, Ulf and Sochting, Ulrik},
  issn         = {0024-2829},
  keyword      = {semi-cryptic species,Teloschistales,nrDNA ITS,lichens,alveolate cortex,Caloplaca citrina clade},
  language     = {eng},
  pages        = {571--604},
  publisher    = {Cambridge University Press},
  series       = {Lichenologist},
  title        = {The taxonomy of the Caloplaca citrina group (Teloschistaceae) in the Black Sea region; with contributions to the cryptic species concept in lichenology},
  url          = {http://dx.doi.org/10.1017/S0024282909008317},
  volume       = {41},
  year         = {2009},
}