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

作者：Aptroot Andre^*; Mendonca Cleverton de Oliveira; Ferraro Lidia Itati; da Silva Caceres Marcela Eugenia

来源：Lichenologist, 2014, 46(6): 801-807.

DOI：10.1017/S0024282914000425

• Atlantic rainforest
• Chaco
• corticolous
• Guyana
• lichens
• Ostropales
• Sergipe

The following new corticolous species are described. Thelopsis cruciata Aptroot & M. Caceres, with an olive-green thallus, immersed red-brown perithecia and c. 50-100 cruciate ascospores per ascus, 7-10 x 4-7 mu m, from Brazil. Topelia argentinensis Aptroot, L. I. Ferraro & M. Caceres, with a verrucose, partly almost isidiate, greenish grey thallus, immersed pinkish perithecia and 8 uniseriate muriform ascospores per ascus, 12-17 x 7-11 mu m, from Argentina. Topelia tetraspora Aptroot & M. Caceres, with a c. 0.1-0.6 mu m thick layer of coralloid to usually flattened, irregularly palmately branched isidia c. 0.05 mm diam., ascospores 15-19 x 2-6-septate, muriform, ellipsoid, 39-50 x 11-16 mu m, 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.

• 出版日期2014-11