Beech Tarcrust Biscogniauxia nummularia (Bull.) Kuntze syn. Hypoxylon nummularium Bull. (illustrated 60% life size) Fruit body crust on wood; blackish; shiny. Spores 11–14×7–10¼, broadly elliptical to subglobose; blackish-brown. Asci 125×12¼, cylindrical. Habitat on dead beech; all year. Frequent. Not edible.
