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

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Punctelia perreticulata (Rasanen) 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.

Document Type: Research Article

Publication date: January 1, 1996

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