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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
Affiliation:
ABL Herbarium, Gerrit van der Veenstraat 107, NL-3762 XK Soest, The Netherlands. Email: [email protected]
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

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.

Type
Articles
Copyright
Copyright © British Lichen Society 2014 

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