Close up of dog lichen (Peltigera membranacea) at the base ...

The image showcases a close-up view of dog lichen (Peltigera membranacea) at the base of a tree located approximately 20 miles northwest of Saint Petersburg, Russia. The photograph was taken on May 22, 2019.

**Key Features:**

* **Lichen Appearance:** Dog lichen is characterized by its grayish-brown color and irregularly shaped thalli with wavy margins. The lichen has a lobate structure, resembling lettuce leaves.
* **Texture:** The surface of the lichen appears rough and leathery to the touch.
* **Habitat:** As indicated in the caption, the lichen is growing at the base of a tree.

**Color Palette:**

* **Dominant Color:** Grayish-brown
* **Secondary Colors:** Green (from moss or other vegetation) and brown (from the tree bark)

**Overall Impression:**
The image provides a detailed view of the dog lichen's unique appearance and habitat, showcasing its interaction with the surrounding environment. – AI vision