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Three new lichen species from Nicaragua, with keys to the known species of Eugeniella and Malmidea

  • Othmar BREUSS (a1) and Robert LÜCKING (a2)
Abstract

Eugeniella palleola, Graphis paraschiffneri, and Malmidea cineracea are described from Nicaragua. Eugeniella palleola is characterized by having pale apothecial discs and prominent, white margins, and producing a complex chemistry including atranorin, stictic and norstictic acids, and an unknown substance. Graphis paraschiffneri has lirellae with a lateral thalline margin, striate labia, a completely carbonized excipulum, transversely septate ascospores, and contains norstictic acid in the thallus. Malmidea cineracea is characterized by a granulose-isidiate thallus with a yellowish medulla and a compact, crystal-encrusted excipulum. Malmidea nigromarginata and M. piperina are proposed as new combinations. Keys are presented to all known species of Eugeniella (9) and Malmidea (50).

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References
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The Lichenologist
  • ISSN: 0024-2829
  • EISSN: 1096-1135
  • URL: /core/journals/lichenologist
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