An infrequently recorded conecap with a distinct ring. Found in woodland litter and, more often, in horticultural compost. There are very few Scottish records

References: 
Breitenbach & Kranzlin (1995) Fungi of Switzerland, Volume 4, Agarics, 2nd Part
Knudsen & Vesterholt, editors (2012 second edition) Funga Nordica