the.com/fairy ring

a fungus growing outward in a perfect circle, blamed on dancing elves for centuries

means A naturally occurring ring or arc of mushrooms in grass or woodland, formed as a single fungus spreads outward underground and fruits along its growing edge.

from A plain English compound of "fairy" and "ring," naming the circle after the folklore that grew up to explain it: people who had no notion of underground mycelium saw a perfect ring of toadstools appear overnight and concluded that fairies or elves had danced there in a ring, leaving the mushrooms as the mark of their revels. "Fairy" itself reaches back through Old French faerie to Latin fata, "the Fates." The science came later; the name kept the dancing.

single organism
one underground fungus, expanding from a central spore
size record
some span 600 meters and 700 years old
folklore
stepping inside risked enslavement to fairies
greener grass
the ring feeds nitrogen, boosting growth in arcs
mechanism
mycelium dies in the center, fruits at the edge
for instance

fairy ring mushrooms wales — common name for naturally occurring circular fungal formations in welsh meadows, particularly marasmius oreades species

pengelli forest wales — ancient woodland in pembrokeshire containing documented fairy ring formations where locals historically reported supernatural gatherings

the.com · every word