Caracteres anatómicos foliares como herramienta para contribuir a la identificación de especies de mirtáceas / Anatomical characters as a tool to help identify species of myrtaceae

摘要

In Myrtaceae the foliar anatomical characteristics have been used in taxonomic researches; nevertheless, there are some traits that do not provide information to identify species. The aim of this research was to select anatomy traits of the foliar lamina through statistical procedures (cluster analysis CA, main components CAM and frequency F) in order to differentiate myrtaceae in Venezuela. Species of Calycolpus O. Berg and Psidium L. were revised obtaining semipermanent laminas, CA established the distribution of the species in three groups; CAM selected most of the variables as concluding for the arrangement. F helped determining that the traits that mostly contributed to the distinction of the species were: shape of epidermic cells, palisade parenchyma and central nerve, presence of sub-epidermic stratus, among others. These results provided useful information to be considered in taxonomic studies of myrtaceae species in Venezuela. ?