Tremella graphidis (BR, holotype) a, b Brownish basidiomata parasitizing the hymenium of Graphis assimilis (top left of a visibly non-infected part of host apothecia). c Hymenium with basidia d Context hyphae e, f Probasidia (basal clamp visible in d) g–j Mature 1-septate basidia k–m Basidiospores n–o Haustoria. All microscopical photos in Phloxin BusingDICoptics.Scalebars:a– b=200μm, c–d=10μm, e–o= 5 μm (scale bar ino). Photographs by P. Diederich