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A world key to species of the genera Topelia and Thelopsis (Stictidaceae), with the description of three new species from Brazil and Argentina

Published online by Cambridge University Press:  23 October 2014

André APTROOT ,
Cléverton de Oliveira MENDONÇA ,
Lidia Itati FERRARO  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
Cléverton de Oliveira MENDONÇA
Affiliation:
Programa de Pós-graduação em Ecologia e Conservação, Universidade Federal de Sergipe, CEP: 49100-000, São Cristóvão, Sergipe, Brazil
Lidia Itati FERRARO
Affiliation:
Instituto de Botanica del Nordeste, Casilla de Correo 209, 3400 Corrientes, Argentina
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 following new corticolous species are described. Thelopsis cruciata Aptroot & M. Cáceres, with an olive-green thallus, immersed red-brown perithecia and c. 50–100 cruciate ascospores per ascus, 7–10×4–7 µm, from Brazil. Topelia argentinensis Aptroot, L. I. Ferraro & M. Cáceres, with a verrucose, partly almost isidiate, greenish grey thallus, immersed pinkish perithecia and 8 uniseriate muriform ascospores per ascus, 12–17×7–11 µm, from Argentina. Topelia tetraspora Aptroot & M. Cáceres, with a c. 0·1–0·6 mm thick layer of coralloid to usually flattened, irregularly palmately branched isidia c. 0·05 mm diam., ascospores 15–19×2–6-septate, muriform, ellipsoid, 39–50×11–16 µm, only up to 4 per ascus maturing, from Brazil. Thelopsis inordinata is reported for the first time from South America, from Guyana. A key is given to all currently known species of Topelia and Thelopsis. The distinction between these genera has become arbitrary with the recent addition of more or less intermediate species.

Keywords

Atlantic rainforestChacocorticolousGuyanalichensOstropalesSergipe
Type
Articles
Information
The Lichenologist , Volume 46 , Issue 6 , November 2014 , pp. 801 - 807
Copyright
Copyright © British Lichen Society 2014 

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