Mycena leaiana

Mycena leaiana, commonly known as the orange mycena or Lea's mycena, is a species of saprobic fungi in the genus Mycena, family Mycenaceae. They have bright orange caps and stalks and reddish-orange gill edges. Typically found in North America, a variety, M. leaiana var. australis, can be found in Australasia. The mushrooms usually grow in dense clusters on deciduous logs. The pigment responsible for the orange color in this species has antibiotic properties....read more on Wikipedia.