Underside of a brittlegill (Russula) mushroom ...

The image presents a comparative view of the underside of a brittlegill mushroom, showcasing its appearance under natural light and when illuminated by a 365 nm ultraviolet (UV-A) blacklight.

**Upper Section: Natural Light**

* The top section displays the underside of the mushroom in natural daylight.
* The gills are white, with a subtle gradient towards the center that transitions from pale pink to white.
* A small amount of dirt is visible on the surface near the stem, adding texture to the image.

**Lower Section: UV-A Blacklight**

* The lower section reveals the same underside but illuminated by a 365 nm ultraviolet (UV-A) blacklight.
* The gills exhibit a striking fluorescent green coloration, with an even more pronounced gradient from pale pink towards the center.
* This effect creates a visually appealing contrast between the natural and UV-illuminated sections.

**Overall Observation**

The image effectively highlights the unique properties of the brittlegill mushroom's gills when exposed to UV light. The fluorescent green coloration adds a captivating element to the visual representation, making it an interesting subject for study or appreciation. – AI vision