Tremella versicolor, an uncommon species new to south Europe (Italy)

While examining fungi on dead wood, a gelatinous basidiomycete parasitic on Peniophora cinerea was found on dead branches of Tilia platyphyllos. The fungus was identified as Tremella versicolor, a rarely collected and infrequently illustrated species, well characterized by its minute, yellow-red, apothecia-like basidiornes, by growing on Peniophora spp., and by mainly relying on conidia for reproduction. Its taxonomy, ecology and host range are discussed.