browser icon
You are using an insecure version of your web browser. Please update your browser!
Using an outdated browser makes your computer unsafe. For a safer, faster, more enjoyable user experience, please update your browser today or try a newer browser.

Dare you enter a fairy ring?

Posted by on October 10, 2013

Fairy rings come in all shapes and sizes, this one shows how small and delicate they can be  Attribution: Richard Croft

By Lily Brinn, an intern at the Society of Biology helping out with Biology Week 2013. UK Fungus Day kick starts Biology Week, beginning with a competition to find the largest fairy ring!

A fairy ring is a naturally occurring ring or arc of mushrooms, they can be so small that you would hardly notice them, or they can grow up to 600 m in diameter! They are mainly found in forested areas, but there are plenty that appear on grasslands.

Fairy ring formation begins with the fungus being spread by airborne spores that originate from the toadstool’s sporocarpus.

Most people associate fairy rings with the circle of mushrooms seen above ground, but there is far more to them than that, most of the organism is below ground, and it is the underlying mycelium that can cause the grass to wither and die through lack of nutrients.

The mycelium consists of a mass of branching, thread-like hyphae, which the fungus absorbs nutrients through, by secreting enzymes to break down the food source and then absorbs the broken down polymers.