Unknown Fungus

Unknown Fungus

Observation - Unknown Fungus - UK and Ireland. Description: This fungus is growing in an old sink used for growing herbs in my back garden. The caps are about 4 - 5 cm across, and there are about 10 of them in the sink. The sink was filled last year with Homebase Peat-free Organic Compost which is made from wood

This fungus is growing in an old sink used for growing herbs in my back garden. The caps are about 4 - 5 cm across, and there are about 10 of them in the sink. The sink was filled last year with "Homebase Peat-free Organic Compost" which is made from wood chippings - so the spores could have arrived with that. I also wonder if it is safe to eat the parsley?