Baccharis nebularis, a new species belonging to B. subgen. Tarchonanthoides sect. Curitybenses, is described, illustrated, and compared to B. chionolaenoides and B. curitybensis. A key for its identification is provided. ...

Mountains of the Brazilian Atlantic Forest can act as islands of cold and wet climate, leading to the isolation and speciation of species with low dispersal capacity, such as the toadlet species of the genus Brachycephalus. ...

Species interactions can shape the structure of natural communities. Such sets of interactions have been described as complex ecological networks, an example of which is the commensal network formed by epiphyte-phorophyte ...