FIGURE 0 in The genus Ramalina Acharius (Ascomycota, Lecanoromycetes, Ramalinaceae) in northern South America

FIGURE 0. View of medullary tissue in R. venezuelensis showing lax or dense cottony hyphae covered by a thin layer of secretion material. The presence of new hyphae (arrows) arising as thin and small appendices from the hyphal surface is also observed. Scale = 17.25 µm.