Fellhanera pluviosilvestris sp. nov. (Pilocarpaceae) is described from siliceous rock in cooltemperate rainforest in eastern New South Wales, Australia. It has a thin, continuous, greyish brown thallus that lacks lichen substances, medium-sized, sessile, biatorine apothecia with a dull blackish disc and a paler proper margin, a uniformly pale, paraplectenchymatous and cupulate excipulum, a dark brown, K+ orange-brown hypothecium and epihymenium, and (4–)8-spored, Byssoloma-type asci with ellipsoid to oblong, (1–)3-septate ascospores measuring 10–18 × 4.5–7.5 μm.