Estudio anatómico comparativo de tallo en algunas especies de Verbenaceae

Abstract

THIS STUDY ANALYZES, IN A COMPARATIVE WAY, THE STEM ANATOMY, PARTICULARLY THE ORIGIN AND DEVELOPMENT OF THE PERIDERM IN SOME MEDICINAL PLANTS: ALOYSIA CITRIODORA PALAU, ALOYSIA GRATISSIMA (GILL. ET HOOK.) TRONCOSO, ALOYSIA POLYSTACHYA (GRISEB.) MOLD., LANTANA CAMARA L., LIPPIA INTEGRIFOLIA (GRISEB.) HIERON., LIPPIA JUNELLIANA (MOLD.) TRONCOSO, AND LIPPIA TURBINATA GRISEB. (VERBENACEAE). THE HISTOLOGICAL FEATURES ARE DESCRIBED AND ILLUSTRATED, IN ORDER TO PROVIDE ADEQUATE CHARACTERS TO VERIFY THE IDENTITY OF THESE SPECIES WHEN QUALITY CONTROL ARE REQUIRED. THE CONCLUSIONS ARE: IN ALL THE STUDIED SPECIES, THE PHELLOGEN ARISES AT A DEEP LEVEL AND WITH AN EARLY OR LATE FORMATION; ONLY IN ALOYSIA GRATISSIMA IS THE PERIDERM INITIATED FIRST IN THE CORTEX FOLLOWED BY ANOTHER ONE OF PHLOEMATIC ORIGIN.