Using conventional techniques for structural studies under conventional and polarizing light microscopy this work describes and compares the thallus anatomy of two Parmotrema species, Parmotrema consors and Parmotrema cf. reparatum, with dimorphic rhizinae and effigutare maculae formerly attributed to Canomaculina. The obtained data showed that the species are not anatomically similar, including the aspects of epicortex, upper cortex anatomy and the rhizinae characteristics. Parmotrema cf. reparatum is anatomically similar to the previously studied group of species of Parmotrema with reticulate maculae (formerly included in Rimelia). The typical epicortex and upper cortex polysaccharides of the group of species of Parmotrema with dimorphic rhizinne showed histochemical differentiation from those mentioned for the group of Parmotrema with reticulate maculae.
effigutare maculae; thallus anatomy
