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Автор Nimis, Pier Luigi
Дата выпуска 1998
dc.description AbstractAfter a brief historical survey, some current trends in the delimitation of lichen genera are discussed. A widespread tendency is that of elevating any supposedly monophyletic group of species to genus rank. As the term ‘ monophyletic ’ has no lower limit, this is likely to result in an explosive inflation of new genera, in a severe loss of the information carried by generic names and in a high degree of nomenclatural disorder. Five criteria are proposed for the acceptance or rejection of new generic segregates: (1) DNA testing for monophyly, (2) phylogenetic analysis, (3) number of characters used, (4) number of species considered, (5) information content of the new splittings. Upon a critical analysis of several recent generic segregations, a more flexible approach to taxonomic ranks is recommended, and particularly, when most of the suggested criteria are not fulfilled, a more frequent use of the subgeneric rank, which does not imply name changes.
Формат application.pdf
Издатель Cambridge University Press
Копирайт Copyright © British Lichen Society 1998
Название A Critical Appraisal of Modern Generic Concepts in Lichenology
Тип research-article
DOI 10.1017/S0024282992000422
Electronic ISSN 1096-1135
Print ISSN 0024-2829
Журнал The Lichenologist
Том 30
Первая страница 427
Последняя страница 438
Аффилиация Nimis Pier Luigi; Dipartimento di Biologia, Università degli Studi di Trieste, via L. Giorgieri 5, 34127 Trieste, Italy.
Выпуск 4-5

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