Green maginate entoloma
About 60mm tall and very difficult to see in mixed grasses, mosses and lichens. Others of this species can be white, yellow, olive, pale green, aqua or teal or even combinations of these.
Found on trackside in a local national park. Rain has been above average over the past few weeks. I've been hoping to see this one for years.
Entoloma viridomarginatum (viridomarginata on some sites)