Harvested commercially in Romania and some other European mainland countries, this good edible species is best picked young because older specimens often are maggot infested. It has a mealy smell that puts some people off, but others find it excellent - it must be well cooked, by the way.The really good news is that these spring mushrooms often appear in groups and even in large fairy rings. Up to 15 cm across, the caps have a smooth texture and are domed when young, flattening when fully expanded. Be sure that you do not confuse this edible species with the relatively uncommon but deadly poisonous Inocybe patouilardii, a bell-shaped mushroom with a fruity smell that appears in similar grassy and woodland-edge habitats.
For more pictures and details of St George's Mushroom see:
www.first-nature.com/fungi/id_guide/tricholomataceae/calocybe_gambosa.htm
Happy hunting!