Two new photomorphs in the Lobariaceae have been found on the remote island of Reunion in the Mascarene archipelago: the free-living Dendriscocaulon-like cyanomorph of the pantropical Lobaria discolor, and the cyanomorph of Sticta dichotoma, a species apparently endemic to the western parts of the Indian Ocean, known only from its chloromorph. Inferences from three loci demonstrate that the fungus involved in each morph of either pair belongs to the same species. Phylogenetic analyses resolve all genera of the Lobariaceae as polyphyletic, and all Dendriscocaulon-like cyanomorphs within Lobaria, except for D. dendroides, which belongs to Sticta.