Approximately 120,000 fungal species are described. If the numerical ratio between vascular plants and fungi of 1:6 in botanically well-examined regions, like Great Britain, however, is transferred to a global scale of 270,000 vascular plants, 1.6 million fungi might exist. That is, so far only about 10°A) of the actual fungal species are described (Anonymous 1992b). Robson (1999) even estimated 3 million fungal species. Nomenclature regulates the constitution of names, their validity, legitimacy andpriority or synonymy, and maintains a single correct name for each taxon (International Code of Botanical Nomenclature, St. Louis Code 2000). In view of the author names for fungi, these have to be only abbreviated when more than two letters are saved. Names are always abbreviated between a consonant and a vowel. The abbreviation should not cause confusion with other names. Contractions by omis...
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