|Hygrocybe pratensis. Photo John James|
Last week, with the help of John James, Marie Evans and Michael Isaac, I measured a couple of partial fairy rings of meadow waxcap Hygrocybe pratensis on two meadows on Waun Las NNR.
The first one measured 5m 30cm - not bad for a meadow which until this year showed no previous mycological interest.
But in our Waxcap' meadow, the ring in the photo measured 8m 43cm in diameter.
|Myself and Michael Isaacs in the waxcpa field measuring the|
meadow waxcap fairy ring. Photo John James
I contacted Dr. Gareth Griffiths at Aberystwyth University to ask him how old it might be. A few years ago, Gareth conducted a six year experiment of meadow waxcap rings. From this, he suggests that they spread less than 2cm a year. That could (and this is VERY speculative) make this ring over 200 years old.
Should we start carrying out our own experiments on fairy rings in Carmarthenshire?