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Two new species of Roccellaceae (Ascomycota: Arthoniales) from Brazil, with the description of the new genus Sergipea

Published online by Cambridge University Press:  23 August 2013

André APTROOT ,
Damien ERTZ ,
Edvaneide Leandro de LIMA ,
Katia Almeida de JESUS ,
Leonor Costa MAIA  and
Marcela Eugenia da Silva CÁCERES
André APTROOT
Affiliation:
ABL Herbarium, G.v.d.Veenstraat 107, NL-3762 XK Soest, The Netherlands. Email andreaptroot@gmail.com
Damien ERTZ
Affiliation:
National Botanic Garden of Belgium, Domein van Bouchout, 1860 Meise, Belgium
Edvaneide Leandro de LIMA
Affiliation:
Departamento de Micologia, Universidade Federal de Pernambuco, CEP: 50670-901, Recife, Pernambuco, Brazil
Katia Almeida de JESUS
Affiliation:
Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49500-000, Itabaiana, Sergipe, Brazil
Leonor Costa MAIA
Affiliation:
Departamento de Micologia, Universidade Federal de Pernambuco, CEP: 50670-901, Recife, Pernambuco, 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

The new lichen genus Sergipea M. Cáceres, Ertz & Aptroot is described in the Roccellaceae, based on the new species Sergipea aurata M. Cáceres, Ertz & Aptroot from NE Brazil. The species was found in a remnant of Atlantic transition forest in Sergipe. It is similar in many respects to species of the genus Enterographa, but it is characterized by bright orange stromata, due to the presence of an anthraquinone, and a thallus with a somewhat byssoid hypothallus. Phylogenetically it is close to the genera Dichosporidium and Erythrodecton. The phylogenetic position of the generic type of Dichosporidium confirms the close relationship of the genus to Erythrodecton in the basal branch of the Roccellaceae. A new species of Enterographa is also described from NE Brazil. Enterographa rotundata E. L. Lima, M. Cáceres & Aptroot has solitary, round apothecia, which is unusual in this genus with mainly elongated apothecia or punctiform apothecia arranged in lines. It was found in Caatinga forest in Pernambuco.

Keywords

Atlantic rainforestCatingacorticolousDichosporidiumEnterographaErythrodectonlichensPernambucoSergipe
Type
Articles
Information
The Lichenologist , Volume 45 , Issue 5 , September 2013 , pp. 627 - 634
Copyright
Copyright © British Lichen Society 2013 

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