Novas ocorrências de liquens corticícolas crostosos e microfoliosos em vegetação de Caatinga no semi-árido de Alagoas

Epiphytic microlichens as indicators of phytosociological differentiation between Caatinga and Brejos de Altitude

“…Anisomeridium tamarindi, Chrysothrix xanthina, Enterographa sipmanii and Graphis oxyclada had been already cited by Cáceres (2007) for Pernambuco. There are also previous records for Graphis arbusculaeformis, G. handelii, Hafellia bahiana, H. curatellae, and H. desertica for Alagoas (Menezes et al 2011;Cavalcante 2012). For the semiarid region in Sergipe and Alagoas, Graphis lineola had also been reported (Cavalcante 2012;Rodrigues 2012).…”

“…Among the species common to both areas, only Glyphis scyphulifera was previously cited for Caatinga and Atlantic Forest in northeastern Brazil (Cáceres 2007), and Graphis leptocarpa and G. pinicola were reported from the Caatinga by Menezes et al (2011) and Rodrigues (2012). Since Brejos de Altitude are considered Atlantic Forest enclaves forming islands of rainforest in the middle of the semiarid region (Andrade-Lima 1966), the emergence of species common to Caatinga in areas of Brejo de Altitude should occur because these montane forests are being degraded and disturbed, with the vegetation becoming more open in some places .…”

“…For the semiarid region in Sergipe and Alagoas, Graphis lineola had also been reported (Cavalcante 2012;Rodrigues 2012). Dirinaria confluens, Lecanora helva, and Pyxine berteriana were previously registered for Pernambuco and Alagoas (Cáceres 2007;Menezes et al 2011;Cavalcante 2012). Cratiria obscurior, Dirinaria leopoldii, Graphis submarginata, Haematomma personii, Pertusaria dehiscens, P. flavens, and Ramboldia haematites were previously mentioned for the states of Alagoas, Pernambuco and Sergipe (Cáceres 2007;Menezes et al 2011;Cavalcante 2012;Rodrigues 2012).…”

Two new species of Cryptothecia from NE Brazil

“…Two of the major vegetation types which are dominant in north-eastern Brazil are the Atlantic Rainforest and the Caatinga. Most of the work on lichen diversity currently done in this part of the country is concerned with the coastal forest patches, or Mata Atlântica, with only a few additions in some Caatinga areas (Cáceres 2007; Menezes et al 2011). The Caatinga vegetation is characterized by dry open forests, with semi-arid climate conditions, a pronounced dry season, and some dense rainforest enclaves in higher altitudes.…”