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17 - Systematics of lichenized fungi

Published online by Cambridge University Press:  05 September 2012

A. Tehler
Affiliation:
Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden
M. Wedin
Affiliation:
Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden
Thomas H. Nash, III
Affiliation:
Arizona State University
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Summary

Historically, lichen fungi have through most of the nineteenth and twentieth centuries been arranged in its own class, Lichenes, based on their symbiotic life form as expressed by their composite thalli. By convenience, the name of the lichen fungus is usually but inaccurately applied to the feature referred to as a lichen, as if that was an organism. Actually, lichens are small ecosystems (Section 1.6), comprising associations with two or more components, an algal producer and a fungal consumer. The components are individual organisms; lichens are not. Consequently, lichens per se cannot be classified into natural systems because they have no phylogeny. Today lichen fungi are classified together with other chitinous fungi and incorporated into a common fungal system.

Systematics

Systematics – the science of studying the diversity and hierarchy of nature – is not only the oldest natural science, but is also a science where the modern development is progressing at a dramatic pace. Systematics is built up by four major parts: taxonomy (the delimitation and description of taxa), nomenclature (the formal naming of taxa), phylogeny (the natural relationships among taxa), and classification (the organization of taxa into a hierarchical system). In the present treatment, we focus on the phylogeny and classification of lichen fungi. Taxonomic methods and nomenclatural rules and principles are beyond the scope of the present book.

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Lichen Biology , pp. 336 - 352
Publisher: Cambridge University Press
Print publication year: 2008

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  • Systematics of lichenized fungi
    • By A. Tehler, Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden, M. Wedin, Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden
  • Edited by Thomas H. Nash, III, Arizona State University
  • Book: Lichen Biology
  • Online publication: 05 September 2012
  • Chapter DOI: https://doi.org/10.1017/CBO9780511790478.018
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  • Systematics of lichenized fungi
    • By A. Tehler, Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden, M. Wedin, Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden
  • Edited by Thomas H. Nash, III, Arizona State University
  • Book: Lichen Biology
  • Online publication: 05 September 2012
  • Chapter DOI: https://doi.org/10.1017/CBO9780511790478.018
Available formats
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Send book to Google Drive

To send content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about sending content to Google Drive.

  • Systematics of lichenized fungi
    • By A. Tehler, Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden, M. Wedin, Swedish Museum of Natural History Box 50007 SE 104 05 StockholmSweden
  • Edited by Thomas H. Nash, III, Arizona State University
  • Book: Lichen Biology
  • Online publication: 05 September 2012
  • Chapter DOI: https://doi.org/10.1017/CBO9780511790478.018
Available formats
×