Spores (in KOH, spore print brown) of chestnut ...

The image presents an up-close view of microscopic spores from the chestnut brittlestem mushroom (Homophron spadiceum) or Psathyrella spadicea. The mushrooms were collected at Lick Creek Park in College Station, Texas, on November 15, 2023.

**Key Observations:**

* **Spore Shape and Size:** The spores are oval-shaped, approximately 2-4 micrometers wide.
* **Coloration:** Upon mounting the spores in a KOH (potassium hydroxide) solution, they exhibit a brown coloration. This is consistent with the typical characteristics of Psathyrella spadicea mushrooms, which have a distinctive brown spore print.
* **Spore Print Color:** The KOH mount reveals that the spores produce a brown-colored spore print when crushed and allowed to dry.

**Conclusion:**

Based on these observations, it can be concluded that the image shows microscopic spores from Psathyrella spadicea mushrooms. This identification is supported by the oval shape of the spores, their size, and the brown coloration in KOH mount. – AI vision