Vegetative Anatomy of Aspleniaceae Newman from Brazilian Atlantic rainforest and its application in taxonomy

•The anatomy of species of Asplenium and Hymenasplenium were compared.•The distribution of meristeles is an important character for the segregation between Asplenium and Hymenasplenium.•Characters of petiole and presence of crystals and trichomes at lamina are useful for delimitation of Asplenium species.