Arrhenia eburnea

About

Arrhenia eburnea is a species of agaric fungus in the family Hygrophoraceae. This tiny fungus, whose species epithet eburnea refers to its characteristic ivory colouration, produces pale yellowish, funnel-shaped caps measuring only 0.5–1.5 centimetres across with thick, widely spaced gills underneath and virtually no stipe, growing directly on moss in Mediterranean woodland environments. Found exclusively in the Iberian Peninsula, particularly in Spain and Portugal, it grows in the mild, humid conditions of Mediterranean evergreen oak forests during the cooler, wetter months from late autumn to early spring when moss growth is abundant.

Summary from Wikipedia