Stemonitis splendens, commonly known as Chocolate tube slime, can be found on rotten wood feeding on decaying matter. It looks like hairs growing on wood.
Citation: https://ourwildyard.com/chocolate-tube-slime-mold-stemonitis-splendens/

Stemonitis splendens, commonly known as Chocolate tube slime, can be found on rotten wood feeding on decaying matter. It looks like hairs growing on wood.
Citation: https://ourwildyard.com/chocolate-tube-slime-mold-stemonitis-splendens/