Gyalectidium fantasticum

About

Gyalectidium fantasticum is a species of lichen-forming fungus in the family Gomphillaceae. It is a leaf-dwelling lichen known from widely separated locations in tropical America, including Paraguay and Costa Rica. The species is distinguished by its unusually broad, flat reproductive structures that lie pressed against the thallus surface and are considerably wider than they are long, with a distinctive color pattern that grades from dark grayish-brown at the base to whitish-translucent above.

Summary from Wikipedia