RHH's photos with the keyword: licheomphalia

This is a small fungus, Lichenomphalia umbellifera, the Mushroom Lichen or Greenpea Mushroom Lichen, photographed in Washington Park. If I understand, this is the fruiting body of a lichen, a lichen being a fungus and an algae growing in a symbiotic relationship. In this case the fungus is associated with the green scale-like film on the surface of the rotting log.