The image presents a close-up view of the underside of an oak log, showcasing a thin layer of corticioid fungus (Dichostereum effuscatum). This fungus has formed a black network that covers only a portion of the surface.
**Key Features:**
* **Fungus:** The fungus is characterized by its black color and forms a network-like pattern on the log's underside.
* **Log Surface:** The background of the image features a light brown color, indicating the natural wood texture of the oak log.
* **Texture:** The surface of the log exhibits a rough texture, which could be due to the presence of fungus or other factors.
**Overall Impression:**
The image provides a detailed view of the fungus's growth on the log, highlighting its unique appearance and distribution. – AI vision