Tremella dirinariae (NY, holotype) a Black basidiomata on thallus of Dirinaria aegialita b Hymenium with probasidium (arrow shows basal clamp), and old basidia and epibasidia (not stained) c–j Mature 1-septate basidia k–n Basidiospores o–q Haustoria. All
microscopical photos in Phloxin B using DIC optics. Scale bars: a= 200 μm, b=20 μm, c–q=5 μm (scale bar in q). Photographs by P. Diederich