Common tarcrust fungus (Diatrype stigma) on a fallen ...

The image presents a close-up view of a fallen tree branch, showcasing a distinctive black crust covering its surface. The purpose of the image is to highlight the presence of a fungus, likely identified as Diatrype stigma (Common Tarcrust Fungus), on this decaying wood.

* A fallen tree branch:
   + The branch is lying horizontally across the frame.
   + It has a rough, weathered texture and appears to be covered in lichen or moss.
   + The branch's bark is partially peeling off, revealing a lighter-colored inner layer.
* A black crust covering the surface of the branch:
   + The crust is thick and uneven, with some areas appearing more cracked than others.
   + It covers most of the branch's surface, leaving only small patches of bare wood visible.
   + The crust has a rough, porous texture that contrasts with the smoother bark beneath it.
* A lichen or moss growing on top of the crust:
   + The lichen or moss is white and fluffy, with delicate tendrils spreading out from its center.
   + It appears to be growing directly on top of the black crust, rather than adhering to the underlying bark.
   + The lichen or moss adds a touch of greenery to the otherwise dull brown branch.

Overall, the image provides a detailed look at the unique features of this fallen tree branch, including its weathered bark, rough texture, and unusual growths. The presence of the black crust and accompanying lichen or moss suggests that the branch has been exposed to environmental factors for an extended period, leading to its current state. – AI vision