Fresh pink scratch on a resupinate polypore ...

The image presents a close-up view of a resupinate polypore mushroom, specifically Rigidoporus vinctus (Physisporinus vinctus), growing on an elm tree trunk in Sam Houston National Forest, Texas. The mushroom's pinkish coloration and the presence of a fresh scratch mark are notable features.

**Mushroom Characteristics:**

* **Resupinate Polypore:** The mushroom is resupinate, meaning it grows flatly against its substrate, rather than forming a stalk or cap.
* **Pinkish Coloration:** The upper surface of the mushroom exhibits a pinkish hue, which may be due to the presence of pigments or other substances produced by the fungus.
* **Fresh Scratch Mark:** A recent scratch mark is visible on the mushroom's surface, indicating that it has been disturbed recently.

**Background and Context:**

* **Location:** The image was captured in Sam Houston National Forest, Texas, specifically near an elm tree trunk.
* **Substrate:** The mushroom is growing on a fallen elm tree trunk, which provides its substrate for growth.

**Overall Observation:**

The image provides a detailed view of the resupinate polypore mushroom Rigidoporus vinctus (Physisporinus vinctus), highlighting its unique characteristics and habitat. The presence of a fresh scratch mark suggests that the mushroom has been recently disturbed, possibly by an animal or human activity. – AI vision