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The Distinction of Punctelia Perreticulata and P. Subrudecta (Parmeliaceae, Lecanorales)

Published online by Cambridge University Press:  28 March 2007

M. T. Adler
Affiliation:
Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales—Universidad de Buenos Aires, 4° Piso, Pab. II, Ciudad Universitaria, 1428, Buenos Aires, Argentina.
T. Ahti
Affiliation:
Department of Ecology and Systematics, P.O. Box 47, FIN-00014, University of Helsinki, Finland.

Abstract

Punctelia perreticulata (Räsäanen) G. Wilh. & Ladd is recognized as a distinct species. The only consistent differences between P. perreticulata and P. subrudecta (Nyl.) Krog are the shape and length of conidia. Both species are widespread in the world. In P. perreticulata, there are differences in conidial length among the European, American and Australasian samples studied, but they neither correlate with differences observed in other morphological traits nor with the substratum. An epitype is selected to support the holotype of P. perreticulata, because its identity is uncertain due to the absence of conidia.

Type
Research Article
Copyright
Copyright © British Lichen Society 1996

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