Bezerra Sobreira, Priscylla Nayara ， Aptroot, Andre ， Da Silva Caceres, Marcela Eugenia
2016-11-30 PHYTOTAXA 2016 286(卷), 3(期), (203-206页)
Two new species of Porina are presently described as new to science in the frame of a corticolous lichens survey in the Atlantic rainforest of Pernambuco State, in Northeastern Brazil. The type locality, known as Brejo dos Cavalos, is a so-called Brejo de Altitude, an Atlantic forest fragment located in the municipality of Caruaru, in the middle of the semiarid Caatinga: Porina ochraceocarpa Sobreira, Aptroot & M. Caceres, with small, free, pale brown ascomata and fusiform 3-septate ascospores of 30-32 x 4.5-5 mu m., and Porina purpurata Sobreira, Aptroot & M. Caceres, with hemispherical thallus-covered ascomata that are mostly centrally covered with red, K+ purple pruina, and fusiform (3-)7-septate ascospores of 50-55 x 10-11 mu m. The discovery of these unique taxa emphasizes the importance of thorough surveys of the lichen biota in the Atlantic rainforest of Brazil, a very biodiverse and threatened biome.