Abstract:
The Cordillera del Cóndor on the border between Ecuador and Peru stands out because of its rich biodiversity and high endemism. Here we describe a new dendroid species of the thalloid liverwort genus Riccardia, R. verticillata Gradst. & Reeb, from El Quimi Biological Reserve in the Cóndor region of Ecuador.The plants are described using anatomical and morphological methods. For the anatomical study, plants were treated with bleach (20%) and stained with methylene blue, enhancing observation of the thallus structure.