Gyalectidium puntilloi

About

Gyalectidium puntilloi is a species of lichen-forming fungus in the family Gomphillaceae. It is a leaf-dwelling lichen known from southern Europe, including the Pyrenees and southern Italy, where it grows on boxwood, ivy, and bay laurel in humid valleys. The species is distinguished by its distinctly segmented thallus consisting of whitish polygonal crystalline clusters separated by thin greenish zones, with small twisted scales bearing irregular fringe-like edges developing from the outer margins of these segments.

Summary from Wikipedia