Helocarpon crassipes

Helocarpon crassipes is a species of crustose lichen-forming fungus in the family Ectolechiaceae. It was first described by Theodor Magnus Fries in 1860, based on specimens from northern Norway, and serves as the type species of the genus Helocarpon. The lichen forms a thin, whitish crust and produces small, black, often stalked fruiting bodies. It is found in arctic and alpine habitats in Europe and North America, where it typically grows over mosses on exposed rocks or ground.