Section of mushrooms Amanita pubescens when ...

The image features two sections of mushrooms, each displayed under different lighting conditions. The top section shows a mushroom exposed to regular daylight, while the bottom section is illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park.

**Key Features:**

* **Mushroom Amanita pubescens**
   + Cap: Light brown color
   + Stem: White color with reddish-brown spots
* **Daylight Exposure**
   + No visible fluorescence or bioluminescence
* **UV-A Blacklight Illumination (365 nm)**
   + Blue-green glow on the stem and cap of the mushroom
   + Brighter glow on the stem compared to the cap

**Conclusion:**

The image suggests that Amanita pubescens exhibits fluorescent properties when exposed to UV-A light. This phenomenon is likely due to the presence of specific pigments or compounds in the mushroom's tissues that respond to ultraviolet radiation by emitting light at a shorter wavelength than visible light. The stronger glow observed on the stem may indicate a higher concentration of these fluorescent substances in this part of the mushroom. – AI vision