Clavulina rugosa

Clavulina rugosa, commonly known as the wrinkled coral fungus, is a species of coral fungus in the family Clavulinaceae. It is edible.
Taxonomy.
The species was originally described as "Clavaria rugosa" by Jean Bulliard in 1790. It was transferred to "Clavulina" by Joseph Schröter in 1888.