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Three new Diorygma (Graphidaceae) species from Brazil, with a revised world key

Published online by Cambridge University Press:  23 October 2014

Shirley Cunha FEUERSTEIN ,
Iane Paula Rego CUNHA-DIAS ,
André APTROOT ,
Sionara ELIASARO  and
Marcela Eugenia da Silva CÁCERES
Shirley Cunha FEUERSTEIN
Affiliation:
Universidade Federal do Paraná, Centro Politécnico, Setor Biológicas, Depto. Botânica, CEP 81531-980 – Curitiba, Paraná, Brazil
Iane Paula Rego CUNHA-DIAS
Affiliation:
Instituto de Ensino Superior so Sul do Maranhão, Rua São Pedro, s/n, Jd. Cristo Rei, CEP: 65907-070 – Imperatriz, Maranhão, Brazil
André APTROOT*
Affiliation:
ABL Herbarium, G.v.d.Veenstraat 107, NL-3762 XK Soest, The Netherlands. Email: andreaptroot@gmail.com
Sionara ELIASARO
Affiliation:
Universidade Federal do Paraná, Centro Politécnico, Setor Biológicas, Depto. Botânica, CEP 81531-980 – Curitiba, Paraná, Brazil
Marcela Eugenia da Silva CÁCERES
Affiliation:
Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49500-000 – Itabaiana, Sergipe, Brazil
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Abstract

Three new corticolous Diorygma species are described from Brazil. Diorygma incantatum has transversely 29–31-septate, filiform ascospores 105–108×6 µm, and produces an unidentified substance with Rf 44 in solvent C. Diorygma pauciseptatum produces norstictic and connorstictic acids and has transversely 7–9-septate, I+ blue-violet, large ascospores 28–32×7 µm, surrounded by a gelatinous sheath c. 2 µm wide that is often somewhat expanded at one end. Diorygma tocantinense contains protocetraric acid and has muriform, broadly fusiform ascospores with rounded ends, 24–40×10–15 µm, surrounded by an gelatinous sheath up to c. 5 µm wide that is somewhat expanded at central parts of the ascospore. A revised world key is given to all currently known species of Diorygma.

Keywords

corticolouslichensOstropalesParanátaxonomyTocantins
Type
Articles
Information
The Lichenologist , Volume 46 , Issue 6 , November 2014 , pp. 753 - 761
Copyright
Copyright © British Lichen Society 2014 

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