Rickenella fibula

Rickenella fibula or Omphalina fibula, and commonly known as the orange moss navel[1] is a species of fungus belonging to the genus Rickenella.

[2] The cap is quite small, with a diameter usually less than 1 centimetre (3⁄8 in).

[4] It has little odor or taste, and is regarded as nonpoisonous.

[4] According to molecular analysis, the species is more closely related to certain polypores and crust fungi than other gilled mushrooms.

[2] It may resemble its relative Loreleia marchantiae as well as Mycena acicula and Entoloma unicolor.