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A world key to the species of Pyxine with lichexanthone, with a new species from Brazil

Published online by Cambridge University Press:  07 August 2014

André APTROOT ,
Patricia JUNGBLUTH  and
Marcela E. S. CÁCERES
André APTROOT
Affiliation:
ABL Herbarium, Gerrit van der Veenstraat 107, NL-3762 XK Soest, The Netherlands. Email: andreaptroot@gmail.com
Patricia JUNGBLUTH
Affiliation:
Departamento de Botânica, IBB, UNESP, Caixa Postal 510, CEP 18.618-970, Distrito de Rubião Jr., Botucatu, São Paulo, Brazil
Marcela E. S. CÁCERES
Affiliation:
Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49.500-000, Itabaiana, Sergipe, Brazil
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Abstract

A world key is given to the species of Pyxine with lichexanthone in the upper cortex. Pyxine pustulata Aptroot & Jungbluth is described as a new corticolous species of Pyxine from São Paulo State in Brazil, with lichexanthone in the cortex, upper surface K−, a yellow to ochraceous medulla and clusters of laminal polysidiangia. Brazil is clearly the centre of Pyxine diversity, with 34 out of c. 70 species known worldwide.

Keywords

lichenPhysciaceaeSão Paulosystematicstaxonomytropical
Type
Articles
Information
The Lichenologist , Volume 46 , Issue 5 , September 2014 , pp. 669 - 672
Copyright
Copyright © British Lichen Society 2014 

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