Fungi

A mushroom called Hydnellum peckii growing in North America, Europe and Asia, secretes a red, bloody substance on a white cap.

An excerpt from the article 22 facts about fungi

It is a very rare mushroom, fully protected in Poland, it is placed on the Red List of Large-bearing Mushrooms with status E, i.e. "extinct".

The mushroom is inedible but extremely decorative.