Rinodina canariensis (lichenized Ascomycetes, Physciaceae), a new species parasitic on crustose lichens in Macaronesia and the Mediterranean region

Abstract

A new species, Rinodina canariensis (lichenized Ascomycetes, Physciaceae), is described. It usually grows parasitically on saxicolous crustose lichens in Macaronesia and in the Mediterranean region. It is well characterized chemically by the presence of gyrophoric acid. The characters of the new species are compared with those of other taxa of the genus Rinodina containing gyrophoric acid. Rinodina alba and R. atrocinerea are reported from the island of Madeira for the first time. A short survey of lichen‐parasitic species of Rinodina is given.